#102D40
Closest named color: Oxford Blue (#1B263B). oklch(28.5% 0.049 240.3), rgb(16, 45, 64).
Aa
White text reads best on this color (14.27:1).
About this color
#102D40 is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.049 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.025 away. White text reads best on it, at 14.27:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.47:1 |
| White text | 14.27:1 |
Values
| HEX | #102D40 |
| RGB | rgb(16, 45, 64) |
| HSL | hsl(204, 60%, 16%) |
| OKLCH | oklch(28.5% 0.049 240.3) |
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 #102D40 | 14.27:1 | AAA | Lc -103.8 | Preferred for body text |
| Black text on #102D40 | 1.47:1 | Fails | Lc 0.0 | Not readable |
| #102D40 text on white | 14.27:1 | AAA | Lc 100.9 | Preferred for body text |
| #102D40 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C7DDED
oklch(88.6% 0.032 239.4)
-
Step 300
300
#9FC6E3
oklch(80.8% 0.058 240.6)
-
Step 400
400
#68A8D5
oklch(70.6% 0.093 240.5)
-
Step 500
500
#3892CA
oklch(63.1% 0.119 240.1)
-
Step 600
600
#007BB6
oklch(55.6% 0.128 240.2)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800
#00547F
oklch(42.6% 0.099 240.7)
-
Step 900
900
#0F4666
oklch(37.6% 0.077 239.9)
-
Step 950
950 (this color)
#102D40
oklch(28.5% 0.049 240.3)
#102D40 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) | #242D41 | 0.025 |
| Deuteranopia (no green cones) | #1E2840 | 0.022 |
| Tritanopia (no blue cones) | #003234 | 0.035 |
| Achromatopsia (no color) | #2A2A2A | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102D40
#102D40
oklch(28.5% 0.049 240.3)
- #3C240F
#3C240F
oklch(28.6% 0.049 60)
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 #102D40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.025
- Dark #1B2431 ΔE 0.036
- Space Cadet #2B2D42 ΔE 0.037
- Gunmetal #293241 ΔE 0.038
- Jet #212529 ΔE 0.046
- Midnight Green #073B4C ΔE 0.047
- Prussian Blue #1D3557 ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.054
Use #102D40 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.