#102F3D
Closest named color: Oxford Blue (#1B263B). oklch(28.9% 0.044 230.6), rgb(16, 47, 61).
Aa
White text reads best on this color (14.03:1).
About this color
#102F3D is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.044 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.031 away. White text reads best on it, at 14.03:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.49:1 |
| White text | 14.03:1 |
Values
| HEX | #102F3D |
| RGB | rgb(16, 47, 61) |
| HSL | hsl(199, 58%, 15%) |
| OKLCH | oklch(28.9% 0.044 230.6) |
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 #102F3D | 14.03:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #102F3D | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #102F3D text on white | 14.03:1 | AAA | Lc 100.6 | Preferred for body text |
| #102F3D text on black | 1.49:1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C7DDE9
oklch(88.5% 0.029 231.5)
-
Step 300
300
#9FC8DD
oklch(81% 0.053 230.4)
-
Step 400
400
#67AACB
oklch(70.6% 0.084 231)
-
Step 500
500
#3495BE
oklch(63.2% 0.107 230.3)
-
Step 600
600
#007EA8
oklch(55.6% 0.112 230.6)
-
Step 700
700
#006A8E
oklch(49.1% 0.099 230.6)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900
#0C4860
oklch(37.8% 0.07 230.8)
-
Step 950
950 (this color)
#102F3D
oklch(28.9% 0.044 230.6)
#102F3D 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) | #282E3E | 0.031 |
| Deuteranopia (no green cones) | #222A3D | 0.026 |
| Tritanopia (no blue cones) | #003334 | 0.028 |
| Achromatopsia (no color) | #2C2C2C | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102F3D
#102F3D
oklch(28.9% 0.044 230.6)
- #3D2416
#3D2416
oklch(28.9% 0.045 49.5)
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 #102F3D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.031
- Gunmetal #293241 ΔE 0.036
- Space Cadet #2B2D42 ΔE 0.038
- Dark #1B2431 ΔE 0.039
- Midnight Green #073B4C ΔE 0.043
- Jet #212529 ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.052
Use #102F3D 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.