#102E51
Closest named color: Marine (#042E60). oklch(29.9% 0.073 254.2), rgb(16, 46, 81).
Aa
White text reads best on this color (13.71:1).
About this color
#102E51 is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.073 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.028 away. White text reads best on it, at 13.71:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.53:1 |
| White text | 13.71:1 |
Values
| HEX | #102E51 |
| RGB | rgb(16, 46, 81) |
| HSL | hsl(212, 67%, 19%) |
| OKLCH | oklch(29.9% 0.073 254.2) |
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 #102E51 | 13.71:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #102E51 | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #102E51 text on white | 13.71:1 | AAA | Lc 100.0 | Preferred for body text |
| #102E51 text on black | 1.53:1 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C4DBF9
oklch(88.4% 0.048 255.1)
-
Step 300
300
#9AC4F8
oklch(80.9% 0.087 254.1)
-
Step 400
400
#60A3F5
oklch(70.7% 0.139 254.5)
-
Step 500
500
#2C89F1
oklch(63% 0.178 254.5)
-
Step 600
600
#0072D8
oklch(55.7% 0.178 254.2)
-
Step 700
700
#005FB7
oklch(49.1% 0.158 254.4)
-
Step 800
800
#004E97
oklch(42.8% 0.136 254.1)
-
Step 900
900
#06417C
oklch(37.7% 0.115 254)
-
Step 950
950 (this color)
#102E51
oklch(29.9% 0.073 254.2)
#102E51 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) | #1E3152 | 0.019 |
| Deuteranopia (no green cones) | #132B50 | 0.009 |
| Tritanopia (no blue cones) | #00363B | 0.056 |
| Achromatopsia (no color) | #2D2D2D | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102E51
#102E51
oklch(29.9% 0.073 254.2)
- #402800
#402800
oklch(29.9% 0.063 74.4)
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 #102E51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.028
- Prussian Blue #1D3557 ΔE 0.029
- Space Cadet #2B2D42 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.044
- Midnight Green #073B4C ΔE 0.046
- Gunmetal #293241 ΔE 0.047
- Marine Blue #01386A ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.050
Use #102E51 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.