#0A41A1
Closest named color: Sapphire (#2138AB). oklch(40.8% 0.165 261.2), rgb(10, 65, 161).
Aa
White text reads best on this color (9.19:1).
About this color
#0A41A1 is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.165 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.028 away. White text reads best on it, at 9.19:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.28:1 |
| White text | 9.19:1 |
Values
| HEX | #0A41A1 |
| RGB | rgb(10, 65, 161) |
| HSL | hsl(218, 88%, 34%) |
| OKLCH | oklch(40.8% 0.165 261.2) |
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 #0A41A1 | 9.19:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #0A41A1 | 2.28:1 | Fails | Lc 13.6 | Not readable |
| #0A41A1 text on white | 9.19:1 | AAA | Lc 90.4 | Preferred for body text |
| #0A41A1 text on black | 2.28:1 | Fails | Lc -11.9 | 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 800.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFD
oklch(93.7% 0.027 260.3)
-
Step 200
200
#C6DAFD
oklch(88.5% 0.053 261.7)
-
Step 300
300
#9EC1FF
oklch(80.8% 0.096 261.6)
-
Step 400
400
#699FFF
oklch(70.8% 0.152 261.1)
-
Step 500
500
#3F83FE
oklch(63.2% 0.196 261.1)
-
Step 600
600
#1D68EE
oklch(55.7% 0.215 261.2)
-
Step 700
700
#0F55CF
oklch(49.1% 0.2 261.2)
-
Step 800
800 (this color)
#0A41A1
oklch(40.8% 0.165 261.2)
-
Step 900
900
#153D84
oklch(37.7% 0.128 260.9)
-
Step 950
950
#0E244D
oklch(26.9% 0.081 261.5)
#0A41A1 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) | #004FA4 | 0.036 |
| Deuteranopia (no green cones) | #00419F | 0.005 |
| Tritanopia (no blue cones) | #005A6A | 0.127 |
| Achromatopsia (no color) | #484848 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A41A1
#0A41A1
oklch(40.8% 0.165 261.2)
- #614400
#614400
oklch(40.8% 0.084 80.9)
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 #0A41A1, closest first.
No curated palette has a color within ΔE 0.04 of #0A41A1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.028
- Cobalt #1E488F ΔE 0.039
- Blue Blue #2242C7 ΔE 0.064
- Blueberry #464196 ΔE 0.064
- Twilight Blue #0A437A ΔE 0.066
- Dusk Blue #26538D ΔE 0.067
- Light Navy #155084 ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.074
Use #0A41A1 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.