#10275D
Closest named color: Marine (#042E60). oklch(29.1% 0.101 263.8), rgb(16, 39, 93).
Aa
White text reads best on this color (14.28:1).
About this color
#10275D is a dark, moderately saturated blue. In OKLCH its lightness is 29%, its chroma 0.101 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.021 away. White text reads best on it, at 14.28:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.47:1 |
| White text | 14.28:1 |
Values
| HEX | #10275D |
| RGB | rgb(16, 39, 93) |
| HSL | hsl(222, 71%, 21%) |
| OKLCH | oklch(29.1% 0.101 263.8) |
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 #10275D | 14.28:1 | AAA | Lc -103.7 | Preferred for body text |
| Black text on #10275D | 1.47:1 | Fails | Lc 0.0 | Not readable |
| #10275D text on white | 14.28:1 | AAA | Lc 100.7 | Preferred for body text |
| #10275D text on black | 1.47:1 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A1C0FF
oklch(80.8% 0.096 264.1)
-
Step 400
400
#6F9DFF
oklch(70.7% 0.152 263.9)
-
Step 500
500
#4980FF
oklch(63% 0.198 264)
-
Step 600
600
#215FFF
oklch(55.5% 0.245 263.8)
-
Step 700
700
#0D48E9
oklch(49.1% 0.247 263.8)
-
Step 800
800
#0D3DBC
oklch(42.7% 0.204 263.8)
-
Step 900
900
#123794
oklch(37.8% 0.159 263.8)
-
Step 950
950 (this color)
#10275D
oklch(29.1% 0.101 263.8)
#10275D 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) | #002E5F | 0.021 |
| Deuteranopia (no green cones) | #00275C | 0.013 |
| Tritanopia (no blue cones) | #00343D | 0.080 |
| Achromatopsia (no color) | #2A2A2A | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10275D
#10275D
oklch(29.1% 0.101 263.8)
- #3A2800
#3A2800
oklch(29.1% 0.06 82.4)
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 #10275D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.021
- Midnight Blue #191970 ΔE 0.047
- Prussian Blue #1D3557 ΔE 0.050
- Marine Blue #01386A ΔE 0.052
- Oxford Blue #1B263B ΔE 0.063
- Space Cadet #2B2D42 ΔE 0.067
- Dark Indigo #1F0954 ΔE 0.071
- Darkblue #030764 ΔE 0.073
Use #10275D 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.