#263E5B
Closest named color: Dark Grey Blue (#29465B). oklch(35.8% 0.059 253.9), rgb(38, 62, 91).
Aa
White text reads best on this color (10.92:1).
About this color
#263E5B is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.059 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.027 away. White text reads best on it, at 10.92:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.92:1 |
| White text | 10.92:1 |
Values
| HEX | #263E5B |
| RGB | rgb(38, 62, 91) |
| HSL | hsl(213, 41%, 25%) |
| OKLCH | oklch(35.8% 0.059 253.9) |
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 #263E5B | 10.92:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #263E5B | 1.92:1 | Fails | Lc 8.7 | Not readable |
| #263E5B text on white | 10.92:1 | AAA | Lc 95.2 | Preferred for body text |
| #263E5B text on black | 1.92:1 | Fails | Lc -7.5 | 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
#E4EAF2
oklch(93.5% 0.013 255.5)
-
Step 200
200
#CEDAE9
oklch(88.4% 0.024 254)
-
Step 300
300
#ADC3DD
oklch(80.9% 0.044 252.7)
-
Step 400
400
#82A3CC
oklch(70.6% 0.071 254.1)
-
Step 500
500
#628CBF
oklch(63% 0.09 253.9)
-
Step 600
600
#4976AC
oklch(55.8% 0.098 253.9)
-
Step 700
700
#3A6393
oklch(49.2% 0.09 253.4)
-
Step 800
800
#305178
oklch(42.8% 0.076 253.6)
-
Step 900
900 (this color)
#263E5B
oklch(35.8% 0.059 253.9)
-
Step 950
950
#192738
oklch(26.9% 0.037 253.8)
#263E5B 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) | #323F5C | 0.017 |
| Deuteranopia (no green cones) | #2C3A5A | 0.014 |
| Tritanopia (no blue cones) | #064548 | 0.053 |
| Achromatopsia (no color) | #3D3D3D | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #263E5B
#263E5B
oklch(35.8% 0.059 253.9)
- #4F3816
#4F3816
oklch(35.9% 0.059 74.5)
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 #263E5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.027
- Dark Blue Grey #1F3B4D ΔE 0.027
- Prussian Blue #1D3557 ΔE 0.032
- Charcoal #264653 ΔE 0.033
- Midnight Green #073B4C ΔE 0.041
- Marine Blue #01386A ΔE 0.047
- Onyx #343A40 ΔE 0.048
- Gunmetal #293241 ΔE 0.052
Use #263E5B 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.