#10313F
Closest named color: Gunmetal (#293241). oklch(29.6% 0.046 229.2), rgb(16, 49, 63).
Aa
White text reads best on this color (13.69:1).
About this color
#10313F is a dark, muted teal or cyan. In OKLCH its lightness is 30%, its chroma 0.046 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.032 away. White text reads best on it, at 13.69:1.
| Hue family | Teals and cyans |
| Lightness | dark (30%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.53:1 |
| White text | 13.69:1 |
Values
| HEX | #10313F |
| RGB | rgb(16, 49, 63) |
| HSL | hsl(198, 59%, 15%) |
| OKLCH | oklch(29.6% 0.046 229.2) |
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 #10313F | 13.69:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #10313F | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #10313F text on white | 13.69:1 | AAA | Lc 100.1 | Preferred for body text |
| #10313F 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
#C6DDE9
oklch(88.4% 0.03 230.3)
-
Step 300
300
#9DC8DD
oklch(80.9% 0.054 229.3)
-
Step 400
400
#63ABCC
oklch(70.7% 0.087 229.4)
-
Step 500
500
#2C95BF
oklch(63% 0.111 229.7)
-
Step 600
600
#007EA6
oklch(55.5% 0.11 229.3)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005774
oklch(42.7% 0.085 229.4)
-
Step 900
900
#054860
oklch(37.6% 0.072 229.5)
-
Step 950
950 (this color)
#10313F
oklch(29.6% 0.046 229.2)
#10313F 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) | #2A3040 | 0.033 |
| Deuteranopia (no green cones) | #232B3F | 0.029 |
| Tritanopia (no blue cones) | #003536 | 0.027 |
| Achromatopsia (no color) | #2D2D2D | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10313F
#10313F
oklch(29.6% 0.046 229.2)
- #3F2618
#3F2618
oklch(29.6% 0.045 49.6)
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 #10313F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.032
- Midnight Green #073B4C ΔE 0.036
- Oxford Blue #1B263B ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.043
- Dark #1B2431 ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.047
- Jet #212529 ΔE 0.050
Use #10313F 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.