#556EFE
Closest named color: Cornflower (#6A79F7). oklch(60.1% 0.215 271), rgb(85, 110, 254).
Aa
Black text reads best on this color (5.04:1).
About this color
#556EFE is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.215 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.041 away. Black text reads best on it, at 5.04:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.215) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.04:1 |
| White text | 4.16:1 |
Values
| HEX | #556EFE |
| RGB | rgb(85, 110, 254) |
| HSL | hsl(231, 99%, 66%) |
| OKLCH | oklch(60.1% 0.215 271) |
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 #556EFE | 4.16:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #556EFE | 5.04:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #556EFE text on white | 4.16:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #556EFE text on black | 5.04:1 | AA | Lc -33.5 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FF
oklch(93.5% 0.031 271.7)
-
Step 200
200
#CBD8FF
oklch(88.5% 0.056 270.7)
-
Step 300
300
#AABEFF
oklch(81% 0.095 271)
-
Step 400
400
#7E99FF
oklch(70.7% 0.152 270.9)
-
Step 500
500 (this color)
#556EFE
oklch(60.1% 0.215 271)
-
Step 600
600
#475BF9
oklch(55.7% 0.234 270.9)
-
Step 700
700
#3A49D9
oklch(49.2% 0.217 271)
-
Step 800
800
#2F3DAF
oklch(42.6% 0.18 271)
-
Step 900
900
#29368A
oklch(37.6% 0.14 271.3)
-
Step 950
950
#172151
oklch(27% 0.089 270.5)
#556EFE 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) | #0084FF | 0.063 |
| Deuteranopia (no green cones) | #0075FB | 0.050 |
| Tritanopia (no blue cones) | #0091AB | 0.176 |
| Achromatopsia (no color) | #7C7C7C | 0.215 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556EFE
#556EFE
oklch(60.1% 0.215 271)
- #9C7D00
#9C7D00
oklch(60.2% 0.123 91.3)
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 #556EFE, closest first.
No curated palette has a color within ΔE 0.04 of #556EFE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.041
- Clear Blue #247AFD ΔE 0.043
- Neon Blue #4361EE ΔE 0.046
- Royal Blue #4169E1 ΔE 0.051
- Medium Slate Blue #7B68EE ΔE 0.056
- Cerulean Blue #056EEE ΔE 0.059
- Bright Blue #0165FC ΔE 0.063
- Azul #1D5DEC ΔE 0.075
Use #556EFE 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.