#10374E
Closest named color: Midnight Green (#073B4C). oklch(32.1% 0.059 238.7), rgb(16, 55, 78).
Aa
White text reads best on this color (12.51:1).
About this color
#10374E is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.059 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.015 away. White text reads best on it, at 12.51:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.67:1 |
| White text | 12.51:1 |
Values
| HEX | #10374E |
| RGB | rgb(16, 55, 78) |
| HSL | hsl(202, 66%, 18%) |
| OKLCH | oklch(32.1% 0.059 238.7) |
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 #10374E | 12.51:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #10374E | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #10374E text on white | 12.51:1 | AAA | Lc 98.2 | Preferred for body text |
| #10374E text on black | 1.67:1 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C2DDF1
oklch(88.4% 0.04 240)
-
Step 300
300
#96C8E9
oklch(80.9% 0.07 237.7)
-
Step 400
400
#56AADF
oklch(70.7% 0.113 238.8)
-
Step 500
500
#0093D5
oklch(63.1% 0.142 238.9)
-
Step 600
600
#007CB3
oklch(55.7% 0.124 238.2)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#004769
oklch(37.8% 0.084 238.3)
-
Step 950
950 (this color)
#10374E
oklch(32.1% 0.059 238.7)
#10374E 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) | #2C374F | 0.032 |
| Deuteranopia (no green cones) | #24314E | 0.027 |
| Tritanopia (no blue cones) | #003D3F | 0.040 |
| Achromatopsia (no color) | #343434 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10374E
#10374E
oklch(32.1% 0.059 238.7)
- #492B11
#492B11
oklch(32.1% 0.059 59.1)
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 #10374E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.015
- Dark Blue Grey #1F3B4D ΔE 0.021
- Prussian Blue #1D3557 ΔE 0.023
- Gunmetal #293241 ΔE 0.034
- Space Cadet #2B2D42 ΔE 0.043
- Marine #042E60 ΔE 0.049
- Marine Blue #01386A ΔE 0.049
- Onyx #343A40 ΔE 0.052
Use #10374E 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.