#18312D
Closest named color: Jet (#212529). oklch(29.1% 0.032 182.6), rgb(24, 49, 45).
Aa
White text reads best on this color (13.85:1).
About this color
#18312D is a dark, muted teal or cyan. In OKLCH its lightness is 29%, its chroma 0.032 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Jet (#212529), ΔE 0.042 away. White text reads best on it, at 13.85:1.
| Hue family | Teals and cyans |
| Lightness | dark (29%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Jet (#212529) |
| Black text | 1.51:1 |
| White text | 13.85:1 |
Values
| HEX | #18312D |
| RGB | rgb(24, 49, 45) |
| HSL | hsl(170, 34%, 14%) |
| OKLCH | oklch(29.1% 0.032 182.6) |
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 #18312D | 13.85:1 | AAA | Lc -103.4 | Preferred for body text |
| Black text on #18312D | 1.51:1 | Fails | Lc 0.0 | Not readable |
| #18312D text on white | 13.85:1 | AAA | Lc 100.4 | Preferred for body text |
| #18312D text on black | 1.51:1 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEA
oklch(93.5% 0.011 182.9)
-
Step 200
200
#CBDEDA
oklch(88.5% 0.021 181.8)
-
Step 300
300
#A7C9C3
oklch(80.9% 0.037 183.5)
-
Step 400
400
#75ADA4
oklch(70.6% 0.06 183.4)
-
Step 500
500
#4D998D
oklch(63.1% 0.078 182.2)
-
Step 600
600
#2B8377
oklch(55.5% 0.084 182.4)
-
Step 700
700
#1C6F64
oklch(49.1% 0.079 182.1)
-
Step 800
800
#1B5B52
oklch(42.8% 0.066 182)
-
Step 900
900
#1D4A44
oklch(37.6% 0.051 183.6)
-
Step 950
950 (this color)
#18312D
oklch(29.1% 0.032 182.6)
#18312D 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) | #2F2E2D | 0.035 |
| Deuteranopia (no green cones) | #2B2B2D | 0.033 |
| Tritanopia (no blue cones) | #0E3230 | 0.010 |
| Achromatopsia (no color) | #2D2D2D | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18312D
#18312D
oklch(29.1% 0.032 182.6)
- #39252A
#39252A
oklch(29.1% 0.031 2.8)
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 #18312D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.042
- Gunmetal #293241 ΔE 0.046
- Pakistan Green #283618 ΔE 0.047
- Dark #1B2431 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.054
- Midnight Green #073B4C ΔE 0.056
- Onyx #343A40 ΔE 0.061
Use #18312D 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.