#102C5E
Closest named color: Marine (#042E60). oklch(30.4% 0.096 260.9), rgb(16, 44, 94).
Aa
White text reads best on this color (13.60:1).
About this color
#102C5E is a dark, moderately saturated blue. In OKLCH its lightness is 30%, its chroma 0.096 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.009 away. White text reads best on it, at 13.60:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.54:1 |
| White text | 13.60:1 |
Values
| HEX | #102C5E |
| RGB | rgb(16, 44, 94) |
| HSL | hsl(218, 71%, 22%) |
| OKLCH | oklch(30.4% 0.096 260.9) |
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 #102C5E | 13.60:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #102C5E | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #102C5E text on white | 13.60:1 | AAA | Lc 99.8 | Preferred for body text |
| #102C5E text on black | 1.54:1 | 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
#DFEBFF
oklch(93.7% 0.03 260.7)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9EC2FF
oklch(81% 0.095 260.8)
-
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
#0064FC
oklch(55.7% 0.239 260.9)
-
Step 700
700
#0053D5
oklch(49% 0.211 261)
-
Step 800
800
#0044B1
oklch(42.8% 0.184 260.9)
-
Step 900
900
#073A90
oklch(37.8% 0.151 260.9)
-
Step 950
950 (this color)
#102C5E
oklch(30.4% 0.096 260.9)
#102C5E 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) | #0E3260 | 0.018 |
| Deuteranopia (no green cones) | #002B5D | 0.013 |
| Tritanopia (no blue cones) | #003840 | 0.075 |
| Achromatopsia (no color) | #2E2E2E | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102C5E
#102C5E
oklch(30.4% 0.096 260.9)
- #3F2B00
#3F2B00
oklch(30.5% 0.063 81.1)
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 #102C5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.009
- Prussian Blue #1D3557 ΔE 0.037
- Marine Blue #01386A ΔE 0.039
- Midnight Blue #191970 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.061
- Midnight Green #073B4C ΔE 0.064
- Oxford Blue #1B263B ΔE 0.064
- Dark Blue Grey #1F3B4D ΔE 0.066
Use #102C5E 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.