#256CA2
Closest named color: Ocean Blue (#03719C). oklch(51.4% 0.11 245.6), rgb(37, 108, 162).
Aa
White text reads best on this color (5.60:1).
About this color
#256CA2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.110 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.022 away. White text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.74:1 |
| White text | 5.60:1 |
Values
| HEX | #256CA2 |
| RGB | rgb(37, 108, 162) |
| HSL | hsl(206, 63%, 39%) |
| OKLCH | oklch(51.4% 0.11 245.6) |
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 #256CA2 | 5.60:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #256CA2 | 3.74:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #256CA2 text on white | 5.60:1 | AA | Lc 77.7 | Fine for body text |
| #256CA2 text on black | 3.74:1 | AA large text | Lc -24.1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADCEC
oklch(88.6% 0.029 244.9)
-
Step 300
300
#A5C5E1
oklch(80.9% 0.053 244.9)
-
Step 400
400
#73A6D3
oklch(70.7% 0.086 246)
-
Step 500
500
#4C8FC7
oklch(63% 0.109 245.9)
-
Step 600
600
#2B79B4
oklch(55.7% 0.118 245.4)
-
Step 700
700 (this color)
#256CA2
oklch(51.4% 0.11 245.6)
-
Step 800
800
#1B537D
oklch(42.7% 0.09 245.2)
-
Step 900
900
#1D4565
oklch(37.8% 0.071 245.5)
-
Step 950
950
#12283B
oklch(26.9% 0.045 246.6)
#256CA2 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) | #536EA4 | 0.045 |
| Deuteranopia (no green cones) | #4162A1 | 0.034 |
| Tritanopia (no blue cones) | #00797F | 0.079 |
| Achromatopsia (no color) | #686868 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256CA2
#256CA2
oklch(51.4% 0.11 245.6)
- #91580C
#91580C
oklch(51.4% 0.11 65.8)
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 #256CA2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.022
- Muted Blue #3B719F ΔE 0.025
- Mid Blue #276AB3 ΔE 0.029
- Peacock Blue #016795 ΔE 0.030
- Flat Blue #3C73A8 ΔE 0.030
- French Blue #436BAD ΔE 0.032
- Sea Blue #047495 ΔE 0.037
- Denim #3B638C ΔE 0.040
Use #256CA2 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.