#5B7FFF
Closest named color: Cornflower (#6A79F7). oklch(63.7% 0.194 268.6), rgb(91, 127, 255).
Aa
Black text reads best on this color (5.92:1).
About this color
#5B7FFF is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.194 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.023 away. Black text reads best on it, at 5.92:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.194) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.92:1 |
| White text | 3.54:1 |
Values
| HEX | #5B7FFF |
| RGB | rgb(91, 127, 255) |
| HSL | hsl(227, 100%, 68%) |
| OKLCH | oklch(63.7% 0.194 268.6) |
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 #5B7FFF | 3.54:1 | AA large text | Lc -68.1 | Content text, not long reading |
| Black text on #5B7FFF | 5.92:1 | AA | Lc 41.4 | Non-text elements, placeholder text |
| #5B7FFF text on white | 3.54:1 | AA large text | Lc 62.7 | Content text, not long reading |
| #5B7FFF text on black | 5.92:1 | AA | Lc -39.0 | 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
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#CAD9FD
oklch(88.6% 0.052 267.4)
-
Step 300
300
#A7BFFF
oklch(81% 0.095 268.4)
-
Step 400
400
#799AFF
oklch(70.6% 0.153 268.6)
-
Step 500
500 (this color)
#5B7FFF
oklch(63.7% 0.194 268.6)
-
Step 600
600
#4262EC
oklch(55.6% 0.211 268.6)
-
Step 700
700
#3550CE
oklch(49.1% 0.197 268.6)
-
Step 800
800
#2B43A6
oklch(42.8% 0.162 268.3)
-
Step 900
900
#263A84
oklch(37.8% 0.127 268.3)
-
Step 950
950
#16224D
oklch(26.9% 0.081 268.7)
#5B7FFF 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) | #3490FF | 0.048 |
| Deuteranopia (no green cones) | #0081FC | 0.052 |
| Tritanopia (no blue cones) | #009DB3 | 0.162 |
| Achromatopsia (no color) | #888888 | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B7FFF
#5B7FFF
oklch(63.7% 0.194 268.6)
- #AB8600
#AB8600
oklch(63.7% 0.13 89.1)
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 #5B7FFF, closest first.
No curated palette has a color within ΔE 0.04 of #5B7FFF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.023
- Soft Blue #6488EA ΔE 0.043
- Clear Blue #247AFD ΔE 0.048
- Dodger Blue #1E90FF ΔE 0.054
- Dark Sky Blue #448EE4 ΔE 0.062
- Chefchaouen Blue #4895EF ΔE 0.065
- Medium Slate Blue #7B68EE ΔE 0.066
- Periwinkle #8E82FE ΔE 0.067
Use #5B7FFF 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.