#263C9A
Closest named color: Sapphire (#2138AB). oklch(40.1% 0.155 268.3), rgb(38, 60, 154).
Aa
White text reads best on this color (9.56:1).
About this color
#263C9A is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.155 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.030 away. White text reads best on it, at 9.56:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.19:1 |
| White text | 9.56:1 |
Values
| HEX | #263C9A |
| RGB | rgb(38, 60, 154) |
| HSL | hsl(229, 60%, 38%) |
| OKLCH | oklch(40.1% 0.155 268.3) |
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 #263C9A | 9.56:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #263C9A | 2.19:1 | Fails | Lc 12.3 | Not readable |
| #263C9A text on white | 9.56:1 | AAA | Lc 91.6 | Preferred for body text |
| #263C9A text on black | 2.19:1 | Fails | Lc -10.8 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A6BFFF
oklch(80.9% 0.095 267.8)
-
Step 400
400
#799AFF
oklch(70.6% 0.153 268.6)
-
Step 500
500
#587DFF
oklch(63.1% 0.197 268.3)
-
Step 600
600
#3B5BFF
oklch(55.6% 0.244 268.3)
-
Step 700
700
#2D44E6
oklch(49% 0.241 268.3)
-
Step 800
800
#253ABA
oklch(42.7% 0.2 268.4)
-
Step 900
900 (this color)
#263C9A
oklch(40.1% 0.155 268.3)
-
Step 950
950
#132056
oklch(27% 0.099 268.6)
#263C9A 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) | #004B9D | 0.040 |
| Deuteranopia (no green cones) | #004098 | 0.025 |
| Tritanopia (no blue cones) | #005465 | 0.123 |
| Achromatopsia (no color) | #454545 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #263C9A
#263C9A
oklch(40.1% 0.155 268.3)
- #5A4500
#5A4500
oklch(40.2% 0.082 88.8)
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 #263C9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.030
- Cobalt #1E488F ΔE 0.037
- Blueberry #464196 ΔE 0.048
- Dark Slate Blue #483D8B ΔE 0.054
- Twilight Blue #0A437A ΔE 0.062
- Dusk Blue #26538D ΔE 0.068
- Light Navy #155084 ΔE 0.069
- Indigo Blue #3A18B1 ΔE 0.071
Use #263C9A 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.