#102D4D
Closest named color: Marine (#042E60). oklch(29.3% 0.068 253.1), rgb(16, 45, 77).
Aa
White text reads best on this color (13.95:1).
About this color
#102D4D is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.068 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.034 away. White text reads best on it, at 13.95:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.50:1 |
| White text | 13.95:1 |
Values
| HEX | #102D4D |
| RGB | rgb(16, 45, 77) |
| HSL | hsl(211, 66%, 18%) |
| OKLCH | oklch(29.3% 0.068 253.1) |
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 #102D4D | 13.95:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #102D4D | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #102D4D text on white | 13.95:1 | AAA | Lc 100.4 | Preferred for body text |
| #102D4D text on black | 1.50:1 | 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
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C5DCF7
oklch(88.6% 0.045 252.5)
-
Step 300
300
#9CC4F4
oklch(80.9% 0.081 253.3)
-
Step 400
400
#63A4EF
oklch(70.7% 0.129 253.1)
-
Step 500
500
#318BE9
oklch(63.1% 0.164 252.9)
-
Step 600
600
#0073D4
oklch(55.6% 0.172 253.1)
-
Step 700
700
#0060B3
oklch(49% 0.152 253.2)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900
#0B4278
oklch(37.7% 0.107 252.9)
-
Step 950
950 (this color)
#102D4D
oklch(29.3% 0.068 253.1)
#102D4D 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) | #1E2F4E | 0.018 |
| Deuteranopia (no green cones) | #15294C | 0.013 |
| Tritanopia (no blue cones) | #003539 | 0.053 |
| Achromatopsia (no color) | #2C2C2C | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102D4D
#102D4D
oklch(29.3% 0.068 253.1)
- #3F2600
#3F2600
oklch(29.3% 0.063 72.1)
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 #102D4D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.034
- Prussian Blue #1D3557 ΔE 0.035
- Oxford Blue #1B263B ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.040
- Gunmetal #293241 ΔE 0.045
- Midnight Green #073B4C ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.052
- Dark #1B2431 ΔE 0.054
Use #102D4D 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.