#04263B
Closest named color: Oxford Blue (#1B263B). oklch(25.7% 0.055 240.9), rgb(4, 38, 59).
Aa
White text reads best on this color (15.60:1).
About this color
#04263B is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.055 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.025 away. White text reads best on it, at 15.60:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.34:1 |
| White text | 15.60:1 |
Values
| HEX | #04263B |
| RGB | rgb(4, 38, 59) |
| HSL | hsl(203, 87%, 12%) |
| OKLCH | oklch(25.7% 0.055 240.9) |
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 #04263B | 15.60:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #04263B | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #04263B text on white | 15.60:1 | AAA | Lc 102.3 | Preferred for body text |
| #04263B text on black | 1.34:1 | 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 950.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C5DDEF
oklch(88.5% 0.036 240.3)
-
Step 300
300
#9BC7E7
oklch(80.9% 0.065 240.2)
-
Step 400
400
#61A9DB
oklch(70.8% 0.103 240.6)
-
Step 500
500
#2892D1
oklch(63.1% 0.132 240.6)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679B
oklch(49.1% 0.115 241)
-
Step 800
800
#005480
oklch(42.6% 0.1 241.3)
-
Step 900
900
#02466B
oklch(37.7% 0.087 241.2)
-
Step 950
950 (this color)
#04263B
oklch(25.7% 0.055 240.9)
#04263B 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) | #1C263C | 0.027 |
| Deuteranopia (no green cones) | #14213B | 0.022 |
| Tritanopia (no blue cones) | #002B2D | 0.037 |
| Achromatopsia (no color) | #242424 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04263B
#04263B
oklch(25.7% 0.055 240.9)
- #361C03
#361C03
oklch(25.7% 0.055 60.9)
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 #04263B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.025
- Dark #1B2431 ΔE 0.029
- Rich Black #0D1B2A ΔE 0.044
- Jet #212529 ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.059
- Gunmetal #293241 ΔE 0.065
- Marine #042E60 ΔE 0.070
- Navy Blue #001146 ΔE 0.072
Use #04263B 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.