#263A56
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.5% 0.056 256.9), rgb(38, 58, 86).
Aa
White text reads best on this color (11.52:1).
About this color
#263A56 is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.056 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.020 away. White text reads best on it, at 11.52:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.82:1 |
| White text | 11.52:1 |
Values
| HEX | #263A56 |
| RGB | rgb(38, 58, 86) |
| HSL | hsl(215, 39%, 24%) |
| OKLCH | oklch(34.5% 0.056 256.9) |
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 #263A56 | 11.52:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #263A56 | 1.82:1 | Fails | Lc 7.4 | Not readable |
| #263A56 text on white | 11.52:1 | AAA | Lc 96.5 | Preferred for body text |
| #263A56 text on black | 1.82:1 | Fails | Lc 0.0 | Not readable |
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 900.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE9
oklch(88.5% 0.023 258.4)
-
Step 300
300
#B0C2DC
oklch(80.9% 0.042 257.5)
-
Step 400
400
#86A3CA
oklch(70.8% 0.066 255.9)
-
Step 500
500
#688BBD
oklch(63.1% 0.086 257.3)
-
Step 600
600
#4F75A9
oklch(55.7% 0.092 256.5)
-
Step 700
700
#406291
oklch(49.2% 0.086 256.7)
-
Step 800
800
#355076
oklch(42.8% 0.072 257)
-
Step 900
900 (this color)
#263A56
oklch(34.5% 0.056 256.9)
-
Step 950
950
#1B2738
oklch(27% 0.036 257.1)
#263A56 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) | #2F3C57 | 0.015 |
| Deuteranopia (no green cones) | #293755 | 0.010 |
| Tritanopia (no blue cones) | #0E4044 | 0.049 |
| Achromatopsia (no color) | #393939 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #263A56
#263A56
oklch(34.5% 0.056 256.9)
- #4A3514
#4A3514
oklch(34.5% 0.056 76.2)
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 #263A56, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.020
- Prussian Blue #1D3557 ΔE 0.021
- Midnight Green #073B4C ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.039
- Gunmetal #293241 ΔE 0.040
- Charcoal #264653 ΔE 0.042
- Onyx #343A40 ΔE 0.043
- Marine Blue #01386A ΔE 0.047
Use #263A56 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.