#184F59
Closest named color: Deep Teal (#00555A). oklch(39.7% 0.058 212), rgb(24, 79, 89).
Aa
White text reads best on this color (9.12:1).
About this color
#184F59 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.058 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.020 away. White text reads best on it, at 9.12:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.30:1 |
| White text | 9.12:1 |
Values
| HEX | #184F59 |
| RGB | rgb(24, 79, 89) |
| HSL | hsl(189, 58%, 22%) |
| OKLCH | oklch(39.7% 0.058 212) |
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 #184F59 | 9.12:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #184F59 | 2.30:1 | Fails | Lc 13.2 | Not readable |
| #184F59 text on white | 9.12:1 | AAA | Lc 90.8 | Preferred for body text |
| #184F59 text on black | 2.30:1 | Fails | Lc -11.6 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C8DEE2
oklch(88.5% 0.024 209.8)
-
Step 300
300
#A1C9D1
oklch(81% 0.044 211.2)
-
Step 400
400
#6BADBA
oklch(70.8% 0.07 211.5)
-
Step 500
500
#3B98A9
oklch(63.2% 0.09 211.8)
-
Step 600
600
#008294
oklch(55.7% 0.097 211.6)
-
Step 700
700
#006D7D
oklch(49.1% 0.086 212.3)
-
Step 800
800
#005967
oklch(42.6% 0.075 213)
-
Step 900
900 (this color)
#184F59
oklch(39.7% 0.058 212)
-
Step 950
950
#0D2B31
oklch(27% 0.037 212.9)
#184F59 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) | #474C5A | 0.054 |
| Deuteranopia (no green cones) | #3E4559 | 0.050 |
| Tritanopia (no blue cones) | #005352 | 0.023 |
| Achromatopsia (no color) | #484848 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #184F59
#184F59
oklch(39.7% 0.058 212)
- #623B33
#623B33
oklch(39.7% 0.057 32.3)
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 #184F59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.020
- Dark Teal #014D4E ΔE 0.024
- Dark Slate Gray #2F4F4F ΔE 0.025
- Charcoal #264653 ΔE 0.029
- Dark Grey Blue #29465B ΔE 0.033
- Dark Blue Green #005249 ΔE 0.035
- Petrol #005F6A ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.057
Use #184F59 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.