#10274F
Closest named color: Marine (#042E60). oklch(27.9% 0.079 260.6), rgb(16, 39, 79).
Aa
White text reads best on this color (14.73:1).
About this color
#10274F is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.079 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.035 away. White text reads best on it, at 14.73:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.42:1 |
| White text | 14.73:1 |
Values
| HEX | #10274F |
| RGB | rgb(16, 39, 79) |
| HSL | hsl(218, 66%, 19%) |
| OKLCH | oklch(27.9% 0.079 260.6) |
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 #10274F | 14.73:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #10274F | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #10274F text on white | 14.73:1 | AAA | Lc 101.3 | Preferred for body text |
| #10274F text on black | 1.42:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFD
oklch(93.7% 0.027 260.3)
-
Step 200
200
#C6DAFC
oklch(88.4% 0.052 261.1)
-
Step 300
300
#9EC2FE
oklch(81% 0.094 260.4)
-
Step 400
400
#699FFD
oklch(70.7% 0.15 260.8)
-
Step 500
500
#3F84FB
oklch(63.2% 0.191 260.5)
-
Step 600
600
#1D69EA
oklch(55.5% 0.208 260.7)
-
Step 700
700
#0F57CC
oklch(49.2% 0.194 260.6)
-
Step 800
800
#1148A5
oklch(42.8% 0.16 260.6)
-
Step 900
900
#153D82
oklch(37.6% 0.125 260.6)
-
Step 950
950 (this color)
#10274F
oklch(27.9% 0.079 260.6)
#10274F 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) | #122B51 | 0.013 |
| Deuteranopia (no green cones) | #05254E | 0.013 |
| Tritanopia (no blue cones) | #003037 | 0.061 |
| Achromatopsia (no color) | #282828 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10274F
#10274F
oklch(27.9% 0.079 260.6)
- #372500
#372500
oklch(27.9% 0.058 81)
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 #10274F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.035
- Oxford Blue #1B263B ΔE 0.038
- Prussian Blue #1D3557 ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.052
- Dark #1B2431 ΔE 0.056
- Gunmetal #293241 ΔE 0.061
- Marine Blue #01386A ΔE 0.065
- Midnight Green #073B4C ΔE 0.068
Use #10274F 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.