#4256DC
Closest named color: Warm Blue (#4B57DB). oklch(52.1% 0.204 270.9), rgb(66, 86, 220).
Aa
White text reads best on this color (5.83:1).
About this color
#4256DC is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.204 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.012 away. White text reads best on it, at 5.83:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.204) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.59:1 |
| White text | 5.83:1 |
Values
| HEX | #4256DC |
| RGB | rgb(66, 86, 220) |
| HSL | hsl(232, 69%, 56%) |
| OKLCH | oklch(52.1% 0.204 270.9) |
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 #4256DC | 5.83:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #4256DC | 3.59:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #4256DC text on white | 5.83:1 | AA | Lc 78.6 | Fine for body text |
| #4256DC text on black | 3.59:1 | AA large text | Lc -23.2 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FE
oklch(93.5% 0.029 271.1)
-
Step 200
200
#CBD8FE
oklch(88.5% 0.054 270.4)
-
Step 300
300
#AABEFF
oklch(81% 0.095 271)
-
Step 400
400
#7E99FF
oklch(70.7% 0.152 270.9)
-
Step 500
500
#5F7BFF
oklch(63.1% 0.198 270.7)
-
Step 600
600
#495EF1
oklch(55.6% 0.22 271)
-
Step 700
700 (this color)
#4256DC
oklch(52.1% 0.204 270.9)
-
Step 800
800
#3040A9
oklch(42.7% 0.168 270.8)
-
Step 900
900
#2A3886
oklch(37.8% 0.131 271.1)
-
Step 950
950
#18214F
oklch(26.9% 0.085 271.3)
#4256DC 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) | #006CE0 | 0.057 |
| Deuteranopia (no green cones) | #005ED9 | 0.041 |
| Tritanopia (no blue cones) | #007891 | 0.164 |
| Achromatopsia (no color) | #656565 | 0.205 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4256DC
#4256DC
oklch(52.1% 0.204 270.9)
- #806600
#806600
oklch(52.1% 0.107 91.2)
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 #4256DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.012
- Neon Blue #4361EE ΔE 0.037
- Azul #1D5DEC ΔE 0.039
- Royal Blue #4169E1 ΔE 0.045
- Iris #6258C4 ΔE 0.058
- Dark Periwinkle #665FD1 ΔE 0.059
- Slate Blue #6A5ACD ΔE 0.062
- Cerulean Blue #056EEE ΔE 0.064
Use #4256DC 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.