#15313B
Closest named color: Gunmetal (#293241). oklch(29.6% 0.038 223.8), rgb(21, 49, 59).
Aa
White text reads best on this color (13.68:1).
About this color
#15313B is a dark, muted teal or cyan. In OKLCH its lightness is 30%, its chroma 0.038 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.030 away. White text reads best on it, at 13.68:1.
| Hue family | Teals and cyans |
| Lightness | dark (30%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.53:1 |
| White text | 13.68:1 |
Values
| HEX | #15313B |
| RGB | rgb(21, 49, 59) |
| HSL | hsl(196, 48%, 16%) |
| OKLCH | oklch(29.6% 0.038 223.8) |
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 #15313B | 13.68:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #15313B | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #15313B text on white | 13.68:1 | AAA | Lc 100.1 | Preferred for body text |
| #15313B 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE6
oklch(88.5% 0.026 225.3)
-
Step 300
300
#A2C8D6
oklch(81% 0.045 222.3)
-
Step 400
400
#6CABC2
oklch(70.7% 0.073 223.2)
-
Step 500
500
#3F95B3
oklch(63% 0.093 224.3)
-
Step 600
600
#107F9F
oklch(55.5% 0.101 224.4)
-
Step 700
700
#006B87
oklch(49% 0.092 224)
-
Step 800
800
#07586E
oklch(42.8% 0.077 223)
-
Step 900
900
#144859
oklch(37.6% 0.06 223.9)
-
Step 950
950 (this color)
#15313B
oklch(29.6% 0.038 223.8)
#15313B 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) | #2B303C | 0.030 |
| Deuteranopia (no green cones) | #262C3B | 0.027 |
| Tritanopia (no blue cones) | #003434 | 0.025 |
| Achromatopsia (no color) | #2D2D2D | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15313B
#15313B
oklch(29.6% 0.038 223.8)
- #3D271D
#3D271D
oklch(29.7% 0.038 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 #15313B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.030
- Space Cadet #2B2D42 ΔE 0.037
- Oxford Blue #1B263B ΔE 0.038
- Midnight Green #073B4C ΔE 0.039
- Dark #1B2431 ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.045
- Jet #212529 ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.052
Use #15313B 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.