#18474F
Closest named color: Charcoal (#264653). oklch(37% 0.052 210.6), rgb(24, 71, 79).
Aa
White text reads best on this color (10.22:1).
About this color
#18474F is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.052 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.016 away. White text reads best on it, at 10.22:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.05:1 |
| White text | 10.22:1 |
Values
| HEX | #18474F |
| RGB | rgb(24, 71, 79) |
| HSL | hsl(189, 53%, 20%) |
| OKLCH | oklch(37% 0.052 210.6) |
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 #18474F | 10.22:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #18474F | 2.05:1 | Fails | Lc 10.4 | Not readable |
| #18474F text on white | 10.22:1 | AAA | Lc 93.5 | Preferred for body text |
| #18474F text on black | 2.05:1 | Fails | Lc -9.0 | 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 900.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CADDE1
oklch(88.5% 0.021 211.8)
-
Step 300
300
#A5C8CF
oklch(81% 0.039 211.1)
-
Step 400
400
#72ACB6
oklch(70.8% 0.062 209.5)
-
Step 500
500
#4897A4
oklch(63.2% 0.079 209.6)
-
Step 600
600
#238190
oklch(55.7% 0.086 210.7)
-
Step 700
700
#136D7A
oklch(49.2% 0.08 210)
-
Step 800
800
#155963
oklch(42.8% 0.066 209.5)
-
Step 900
900 (this color)
#18474F
oklch(37% 0.052 210.6)
-
Step 950
950
#112B2F
oklch(27% 0.033 208.6)
#18474F 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) | #40444F | 0.048 |
| Deuteranopia (no green cones) | #383E4F | 0.045 |
| Tritanopia (no blue cones) | #004B49 | 0.023 |
| Achromatopsia (no color) | #414141 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18474F
#18474F
oklch(37% 0.052 210.6)
- #58352F
#58352F
oklch(37% 0.052 30.3)
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 #18474F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.016
- Dark Teal #014D4E ΔE 0.022
- Dark Grey Blue #29465B ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.039
- Dark Blue Green #005249 ΔE 0.042
- Midnight Green #073B4C ΔE 0.044
- Deep Teal #00555A ΔE 0.044
Use #18474F 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.