#557EFF
Closest named color: Cornflower (#6A79F7). oklch(63.2% 0.197 267.3), rgb(85, 126, 255).
Aa
Black text reads best on this color (5.81:1).
About this color
#557EFF is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.197 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.027 away. Black text reads best on it, at 5.81:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.197) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.81:1 |
| White text | 3.61:1 |
Values
| HEX | #557EFF |
| RGB | rgb(85, 126, 255) |
| HSL | hsl(226, 100%, 67%) |
| OKLCH | oklch(63.2% 0.197 267.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #557EFF | 3.61:1 | AA large text | Lc -68.8 | Content text, not long reading |
| Black text on #557EFF | 5.81:1 | AA | Lc 40.8 | Non-text elements, placeholder text |
| #557EFF text on white | 3.61:1 | AA large text | Lc 63.3 | Content text, not long reading |
| #557EFF text on black | 5.81:1 | AA | Lc -38.4 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C9D9FE
oklch(88.5% 0.054 266.8)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#769BFF
oklch(70.7% 0.152 267.2)
-
Step 500
500 (this color)
#557EFF
oklch(63.2% 0.197 267.3)
-
Step 600
600
#3D63EE
oklch(55.7% 0.213 267.3)
-
Step 700
700
#3050CF
oklch(49% 0.199 267.4)
-
Step 800
800
#2843A7
oklch(42.7% 0.164 267.3)
-
Step 900
900
#243A85
oklch(37.8% 0.129 267.5)
-
Step 950
950
#15234E
oklch(27.1% 0.081 267.2)
#557EFF with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2F8FFF | 0.047 |
| Deuteranopia (no green cones) | #007FFC | 0.046 |
| Tritanopia (no blue cones) | #009CB3 | 0.160 |
| Achromatopsia (no color) | #878787 | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557EFF
#557EFF
oklch(63.2% 0.197 267.3)
- #AB8300
#AB8300
oklch(63.1% 0.129 87)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #557EFF, closest first.
No curated palette has a color within ΔE 0.04 of #557EFF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.027
- Clear Blue #247AFD ΔE 0.041
- Soft Blue #6488EA ΔE 0.047
- Dodger Blue #1E90FF ΔE 0.052
- Dark Sky Blue #448EE4 ΔE 0.063
- Chefchaouen Blue #4895EF ΔE 0.067
- Medium Slate Blue #7B68EE ΔE 0.068
- Cornflower Blue #6495ED ΔE 0.072
Use #557EFF in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.