#10313E
Closest named color: Gunmetal (#293241). oklch(29.5% 0.045 227.3), rgb(16, 49, 62).
Aa
White text reads best on this color (13.71:1).
About this color
#10313E is a dark, muted teal or cyan. In OKLCH its lightness is 30%, its chroma 0.045 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.033 away. White text reads best on it, at 13.71:1.
| Hue family | Teals and cyans |
| Lightness | dark (30%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.53:1 |
| White text | 13.71:1 |
Values
| HEX | #10313E |
| RGB | rgb(16, 49, 62) |
| HSL | hsl(197, 59%, 15%) |
| OKLCH | oklch(29.5% 0.045 227.3) |
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 #10313E | 13.71:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #10313E | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #10313E text on white | 13.71:1 | AAA | Lc 100.1 | Preferred for body text |
| #10313E text on black | 1.53:1 | 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
#C6DEE8
oklch(88.6% 0.029 224.7)
-
Step 300
300
#9DC8DB
oklch(80.8% 0.053 226.7)
-
Step 400
400
#64ABCA
oklch(70.6% 0.085 228.1)
-
Step 500
500
#2D96BC
oklch(63.1% 0.108 227.1)
-
Step 600
600
#007FA4
oklch(55.6% 0.108 227.1)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#05485F
oklch(37.6% 0.071 228.4)
-
Step 950
950 (this color)
#10313E
oklch(29.5% 0.045 227.3)
#10313E 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) | #2A303F | 0.033 |
| Deuteranopia (no green cones) | #242B3E | 0.030 |
| Tritanopia (no blue cones) | #003535 | 0.027 |
| Achromatopsia (no color) | #2D2D2D | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10313E
#10313E
oklch(29.5% 0.045 227.3)
- #3F2519
#3F2519
oklch(29.4% 0.045 45.3)
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 #10313E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.033
- Midnight Green #073B4C ΔE 0.037
- Oxford Blue #1B263B ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.044
- Dark #1B2431 ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.049
- Jet #212529 ΔE 0.049
Use #10313E 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.