#4C81FB
Closest named color: Cornflower (#6A79F7). oklch(63.1% 0.191 264), rgb(76, 129, 251).
Aa
Black text reads best on this color (5.84:1).
About this color
#4C81FB is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.191 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.035 away. Black text reads best on it, at 5.84:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.84:1 |
| White text | 3.59:1 |
Values
| HEX | #4C81FB |
| RGB | rgb(76, 129, 251) |
| HSL | hsl(222, 96%, 64%) |
| OKLCH | oklch(63.1% 0.191 264) |
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 #4C81FB | 3.59:1 | AA large text | Lc -68.6 | Content text, not long reading |
| Black text on #4C81FB | 5.84:1 | AA | Lc 40.9 | Non-text elements, placeholder text |
| #4C81FB text on white | 3.59:1 | AA large text | Lc 63.1 | Content text, not long reading |
| #4C81FB text on black | 5.84:1 | AA | Lc -38.5 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C8DAFC
oklch(88.6% 0.051 263.2)
-
Step 300
300
#A2C0FE
oklch(80.8% 0.094 264.4)
-
Step 400
400
#709DFD
oklch(70.6% 0.149 264)
-
Step 500
500 (this color)
#4C81FB
oklch(63.1% 0.191 264)
-
Step 600
600
#3167EA
oklch(55.7% 0.207 263.9)
-
Step 700
700
#2554CC
oklch(49.1% 0.193 264.2)
-
Step 800
800
#1F46A5
oklch(42.8% 0.16 263.9)
-
Step 900
900
#1E3C83
oklch(37.8% 0.125 264.1)
-
Step 950
950
#12244C
oklch(27% 0.078 263.8)
#4C81FB 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) | #3B8FFF | 0.035 |
| Deuteranopia (no green cones) | #007FF9 | 0.039 |
| Tritanopia (no blue cones) | #009EB2 | 0.154 |
| Achromatopsia (no color) | #878787 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C81FB
#4C81FB
oklch(63.1% 0.191 264)
- #AE8100
#AE8100
oklch(63% 0.129 83.9)
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 #4C81FB, closest first.
No curated palette has a color within ΔE 0.04 of #4C81FB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.035
- Clear Blue #247AFD ΔE 0.036
- Dodger Blue #1E90FF ΔE 0.042
- Soft Blue #6488EA ΔE 0.042
- Dark Sky Blue #448EE4 ΔE 0.052
- Chefchaouen Blue #4895EF ΔE 0.057
- Cornflower Blue #6495ED ΔE 0.066
- Cerulean Blue #056EEE ΔE 0.071
Use #4C81FB 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.