#184E59
Closest named color: Deep Teal (#00555A). oklch(39.4% 0.058 213.8), rgb(24, 78, 89).
Aa
White text reads best on this color (9.23:1).
About this color
#184E59 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.058 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.023 away. White text reads best on it, at 9.23:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.27:1 |
| White text | 9.23:1 |
Values
| HEX | #184E59 |
| RGB | rgb(24, 78, 89) |
| HSL | hsl(190, 58%, 22%) |
| OKLCH | oklch(39.4% 0.058 213.8) |
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 #184E59 | 9.23:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #184E59 | 2.27:1 | Fails | Lc 12.9 | Not readable |
| #184E59 text on white | 9.23:1 | AAA | Lc 91.1 | Preferred for body text |
| #184E59 text on black | 2.27:1 | Fails | Lc -11.3 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C8DEE3
oklch(88.6% 0.024 212.9)
-
Step 300
300
#A1C8D2
oklch(80.8% 0.044 215.1)
-
Step 400
400
#6BACBB
oklch(70.6% 0.07 214)
-
Step 500
500
#3D97AA
oklch(63% 0.089 214)
-
Step 600
600
#058196
oklch(55.5% 0.097 214.5)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#015968
oklch(42.7% 0.075 214.3)
-
Step 900
900 (this color)
#184E59
oklch(39.4% 0.058 213.8)
-
Step 950
950
#0D2B31
oklch(27% 0.037 212.9)
#184E59 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) | #464B5A | 0.053 |
| Deuteranopia (no green cones) | #3D4459 | 0.049 |
| Tritanopia (no blue cones) | #005251 | 0.025 |
| Achromatopsia (no color) | #474747 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #184E59
#184E59
oklch(39.4% 0.058 213.8)
- #613A31
#613A31
oklch(39.3% 0.058 33.7)
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 #184E59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.023
- Dark Teal #014D4E ΔE 0.024
- Charcoal #264653 ΔE 0.026
- Dark Slate Gray #2F4F4F ΔE 0.027
- Dark Grey Blue #29465B ΔE 0.030
- Dark Blue Green #005249 ΔE 0.037
- Petrol #005F6A ΔE 0.054
- Charcoal Grey #3C4142 ΔE 0.056
Use #184E59 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.