#557FF8
Closest named color: Cornflower (#6A79F7). oklch(62.9% 0.186 266.6), rgb(85, 127, 248).
Aa
Black text reads best on this color (5.77:1).
About this color
#557FF8 is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.186 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.026 away. Black text reads best on it, at 5.77:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.186) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.77:1 |
| White text | 3.63:1 |
Values
| HEX | #557FF8 |
| RGB | rgb(85, 127, 248) |
| HSL | hsl(225, 92%, 65%) |
| OKLCH | oklch(62.9% 0.186 266.6) |
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 #557FF8 | 3.63:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #557FF8 | 5.77:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #557FF8 text on white | 3.63:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #557FF8 text on black | 5.77:1 | AA | Lc -38.1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FC
oklch(88.5% 0.051 267)
-
Step 300
300
#A6BFFC
oklch(80.8% 0.091 267.1)
-
Step 400
400
#779CFB
oklch(70.7% 0.145 266.6)
-
Step 500
500 (this color)
#557FF8
oklch(62.9% 0.186 266.6)
-
Step 600
600
#3D65E8
oklch(55.6% 0.203 266.7)
-
Step 700
700
#3053CA
oklch(49.2% 0.189 266.7)
-
Step 800
800
#2845A3
oklch(42.8% 0.156 266.6)
-
Step 900
900
#243B81
oklch(37.7% 0.122 266.8)
-
Step 950
950
#15234C
oklch(27% 0.078 266.9)
#557FF8 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) | #3C8EFC | 0.039 |
| Deuteranopia (no green cones) | #077FF6 | 0.046 |
| Tritanopia (no blue cones) | #009BB0 | 0.153 |
| Achromatopsia (no color) | #868686 | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557FF8
#557FF8
oklch(62.9% 0.186 266.6)
- #AB8200
#AB8200
oklch(62.9% 0.129 86.3)
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 #557FF8, closest first.
No curated palette has a color within ΔE 0.04 of #557FF8.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.026
- Soft Blue #6488EA ΔE 0.038
- Clear Blue #247AFD ΔE 0.042
- Dodger Blue #1E90FF ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.054
- Chefchaouen Blue #4895EF ΔE 0.060
- Cornflower Blue #6495ED ΔE 0.066
- Medium Slate Blue #7B68EE ΔE 0.067
Use #557FF8 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.