#102F66
Closest named color: Marine (#042E60). oklch(31.8% 0.104 260.9), rgb(16, 47, 102).
Aa
White text reads best on this color (12.95:1).
About this color
#102F66 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.104 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.015 away. White text reads best on it, at 12.95:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.62:1 |
| White text | 12.95:1 |
Values
| HEX | #102F66 |
| RGB | rgb(16, 47, 102) |
| HSL | hsl(218, 73%, 23%) |
| OKLCH | oklch(31.8% 0.104 260.9) |
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 #102F66 | 12.95:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #102F66 | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #102F66 text on white | 12.95:1 | AAA | Lc 98.8 | Preferred for body text |
| #102F66 text on black | 1.62:1 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFF
oklch(93.6% 0.031 258.9)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9DC2FF
oklch(81% 0.096 260.2)
-
Step 400
400
#689FFF
oklch(70.7% 0.153 260.8)
-
Step 500
500
#3D83FF
oklch(63.2% 0.198 260.8)
-
Step 600
600
#0064FB
oklch(55.6% 0.238 260.9)
-
Step 700
700
#0053D5
oklch(49% 0.211 261)
-
Step 800
800
#0044B1
oklch(42.8% 0.184 260.9)
-
Step 900
900
#003895
oklch(37.7% 0.162 260.9)
-
Step 950
950 (this color)
#102F66
oklch(31.8% 0.104 260.9)
#102F66 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) | #0B3568 | 0.017 |
| Deuteranopia (no green cones) | #002E65 | 0.012 |
| Tritanopia (no blue cones) | #003C45 | 0.080 |
| Achromatopsia (no color) | #313131 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102F66
#102F66
oklch(31.8% 0.104 260.9)
- #432E00
#432E00
oklch(31.8% 0.066 81.2)
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 #102F66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.015
- Marine Blue #01386A ΔE 0.026
- Prussian Blue #1D3557 ΔE 0.038
- Midnight Blue #191970 ΔE 0.056
- Twilight Blue #0A437A ΔE 0.065
- Midnight Green #073B4C ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.067
- Space Cadet #2B2D42 ΔE 0.070
Use #102F66 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.