#263A4D
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34% 0.042 247.9), rgb(38, 58, 77).
Aa
White text reads best on this color (11.70:1).
About this color
#263A4D is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.042 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.009 away. White text reads best on it, at 11.70:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.79:1 |
| White text | 11.70:1 |
Values
| HEX | #263A4D |
| RGB | rgb(38, 58, 77) |
| HSL | hsl(209, 34%, 23%) |
| OKLCH | oklch(34% 0.042 247.9) |
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 #263A4D | 11.70:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #263A4D | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #263A4D text on white | 11.70:1 | AAA | Lc 96.8 | Preferred for body text |
| #263A4D text on black | 1.79:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EAF0
oklch(93.5% 0.01 252.8)
-
Step 200
200
#D0DAE4
oklch(88.4% 0.018 248)
-
Step 300
300
#B1C3D5
oklch(80.9% 0.032 248.2)
-
Step 400
400
#88A4BF
oklch(70.7% 0.05 247.6)
-
Step 500
500
#6A8DAF
oklch(63% 0.065 248.2)
-
Step 600
600
#51779B
oklch(55.6% 0.071 247.9)
-
Step 700
700
#426484
oklch(49.1% 0.065 247.8)
-
Step 800
800
#36526B
oklch(42.7% 0.054 246.4)
-
Step 900
900 (this color)
#263A4D
oklch(34% 0.042 247.9)
-
Step 950
950
#1C2833
oklch(27.1% 0.026 246.6)
#263A4D 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) | #323A4E | 0.017 |
| Deuteranopia (no green cones) | #2D364D | 0.015 |
| Tritanopia (no blue cones) | #163E40 | 0.036 |
| Achromatopsia (no color) | #383838 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #263A4D
#263A4D
oklch(34% 0.042 247.9)
- #47341F
#47341F
oklch(34.1% 0.043 68.3)
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 #263A4D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.009
- Midnight Green #073B4C ΔE 0.028
- Gunmetal #293241 ΔE 0.029
- Onyx #343A40 ΔE 0.029
- Prussian Blue #1D3557 ΔE 0.030
- Charcoal #264653 ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.042
- Space Cadet #2B2D42 ΔE 0.042
Use #263A4D 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.