#256AA2
Closest named color: Ocean Blue (#03719C). oklch(50.9% 0.112 247.1), rgb(37, 106, 162).
Aa
White text reads best on this color (5.73:1).
About this color
#256AA2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.112 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.027 away. White text reads best on it, at 5.73:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.66:1 |
| White text | 5.73:1 |
Values
| HEX | #256AA2 |
| RGB | rgb(37, 106, 162) |
| HSL | hsl(207, 63%, 39%) |
| OKLCH | oklch(50.9% 0.112 247.1) |
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 #256AA2 | 5.73:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #256AA2 | 3.66:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #256AA2 text on white | 5.73:1 | AA | Lc 78.3 | Fine for body text |
| #256AA2 text on black | 3.66:1 | AA large text | Lc -23.4 | 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
#A5C5E2
oklch(81% 0.054 245.9)
-
Step 400
400
#74A6D4
oklch(70.8% 0.086 247.1)
-
Step 500
500
#4D8FC9
oklch(63.2% 0.111 247.1)
-
Step 600
600
#2D78B5
oklch(55.6% 0.12 246.9)
-
Step 700
700 (this color)
#256AA2
oklch(50.9% 0.112 247.1)
-
Step 800
800
#1C527F
oklch(42.6% 0.094 247.5)
-
Step 900
900
#1E4466
oklch(37.6% 0.073 248)
-
Step 950
950
#12283C
oklch(26.9% 0.047 247.8)
#256AA2 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) | #506CA4 | 0.042 |
| Deuteranopia (no green cones) | #3E61A1 | 0.030 |
| Tritanopia (no blue cones) | #00777E | 0.080 |
| Achromatopsia (no color) | #666666 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256AA2
#256AA2
oklch(50.9% 0.112 247.1)
- #905701
#905701
oklch(51% 0.112 66.9)
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 #256AA2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.027
- Mid Blue #276AB3 ΔE 0.028
- Peacock Blue #016795 ΔE 0.028
- Muted Blue #3B719F ΔE 0.030
- French Blue #436BAD ΔE 0.033
- Flat Blue #3C73A8 ΔE 0.035
- Denim #3B638C ΔE 0.038
- Sea Blue #047495 ΔE 0.042
Use #256AA2 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.