#102D55
Closest named color: Marine (#042E60). oklch(29.9% 0.08 257.2), rgb(16, 45, 85).
Aa
White text reads best on this color (13.73:1).
About this color
#102D55 is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.080 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.020 away. White text reads best on it, at 13.73:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.52:1 |
| White text | 13.73:1 |
Values
| HEX | #102D55 |
| RGB | rgb(16, 45, 85) |
| HSL | hsl(215, 68%, 20%) |
| OKLCH | oklch(29.9% 0.08 257.2) |
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 #102D55 | 13.73:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #102D55 | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #102D55 text on white | 13.73:1 | AAA | Lc 100.1 | Preferred for body text |
| #102D55 text on black | 1.52:1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C4DBFD
oklch(88.5% 0.053 258)
-
Step 300
300
#99C3FE
oklch(80.9% 0.095 256.9)
-
Step 400
400
#5FA1FE
oklch(70.7% 0.153 257.2)
-
Step 500
500
#2D86FC
oklch(63.2% 0.195 257.3)
-
Step 600
600
#006DE4
oklch(55.5% 0.199 257.3)
-
Step 700
700
#005CC1
oklch(49.2% 0.175 257.1)
-
Step 800
800
#004BA0
oklch(42.8% 0.152 257.1)
-
Step 900
900
#083F83
oklch(37.8% 0.127 257.2)
-
Step 950
950 (this color)
#102D55
oklch(29.9% 0.08 257.2)
#102D55 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) | #193157 | 0.017 |
| Deuteranopia (no green cones) | #0C2A54 | 0.011 |
| Tritanopia (no blue cones) | #00363C | 0.062 |
| Achromatopsia (no color) | #2D2D2D | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102D55
#102D55
oklch(29.9% 0.08 257.2)
- #3F2900
#3F2900
oklch(30% 0.063 77.5)
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 #102D55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.020
- Prussian Blue #1D3557 ΔE 0.031
- Marine Blue #01386A ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.048
- Oxford Blue #1B263B ΔE 0.049
- Midnight Green #073B4C ΔE 0.052
- Gunmetal #293241 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.056
Use #102D55 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.