#263B56
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.8% 0.055 255.2), rgb(38, 59, 86).
Aa
White text reads best on this color (11.39:1).
About this color
#263B56 is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.055 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.019 away. White text reads best on it, at 11.39:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.84:1 |
| White text | 11.39:1 |
Values
| HEX | #263B56 |
| RGB | rgb(38, 59, 86) |
| HSL | hsl(214, 39%, 24%) |
| OKLCH | oklch(34.8% 0.055 255.2) |
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 #263B56 | 11.39:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #263B56 | 1.84:1 | Fails | Lc 7.7 | Not readable |
| #263B56 text on white | 11.39:1 | AAA | Lc 96.2 | Preferred for body text |
| #263B56 text on black | 1.84:1 | 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
#CFDAE8
oklch(88.4% 0.023 254.4)
-
Step 300
300
#AFC2DB
oklch(80.8% 0.041 255.3)
-
Step 400
400
#85A3C9
oklch(70.7% 0.065 254.6)
-
Step 500
500
#678CBC
oklch(63.2% 0.084 255.2)
-
Step 600
600
#4E75A8
oklch(55.6% 0.091 255.5)
-
Step 700
700
#3F6290
oklch(49.1% 0.085 255.7)
-
Step 800
800
#345075
oklch(42.6% 0.071 255.8)
-
Step 900
900 (this color)
#263B56
oklch(34.8% 0.055 255.2)
-
Step 950
950
#1B2737
oklch(26.9% 0.034 255.8)
#263B56 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) | #303C57 | 0.015 |
| Deuteranopia (no green cones) | #2A3855 | 0.010 |
| Tritanopia (no blue cones) | #0E4144 | 0.049 |
| Achromatopsia (no color) | #3A3A3A | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #263B56
#263B56
oklch(34.8% 0.055 255.2)
- #4A3616
#4A3616
oklch(34.8% 0.055 77)
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 #263B56, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.019
- Prussian Blue #1D3557 ΔE 0.024
- Midnight Green #073B4C ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.036
- Charcoal #264653 ΔE 0.038
- Gunmetal #293241 ΔE 0.041
- Onyx #343A40 ΔE 0.042
- Marine Blue #01386A ΔE 0.048
Use #263B56 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.