#23555E
Closest named color: Deep Teal (#00555A). oklch(41.9% 0.055 211.1), rgb(35, 85, 94).
Aa
White text reads best on this color (8.29:1).
About this color
#23555E is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.055 and its hue 211°. 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 8.29:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.53:1 |
| White text | 8.29:1 |
Values
| HEX | #23555E |
| RGB | rgb(35, 85, 94) |
| HSL | hsl(189, 46%, 25%) |
| OKLCH | oklch(41.9% 0.055 211.1) |
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 #23555E | 8.29:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #23555E | 2.53:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #23555E text on white | 8.29:1 | AAA | Lc 88.5 | Fine for body text |
| #23555E text on black | 2.53:1 | Fails | Lc -13.7 | 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 800.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CCDDE0
oklch(88.6% 0.019 209.4)
-
Step 300
300
#AAC7CC
oklch(81% 0.032 209.2)
-
Step 400
400
#7BAAB3
oklch(70.8% 0.052 210.7)
-
Step 500
500
#5794A0
oklch(63% 0.066 211.6)
-
Step 600
600
#3A7F8B
oklch(55.7% 0.071 210.5)
-
Step 700
700
#2B6B76
oklch(49.1% 0.067 210.6)
-
Step 800
800 (this color)
#23555E
oklch(41.9% 0.055 211.1)
-
Step 900
900
#24484F
oklch(37.8% 0.043 211.7)
-
Step 950
950
#162A2E
oklch(27% 0.027 211.7)
#23555E 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) | #4E525F | 0.053 |
| Deuteranopia (no green cones) | #454B5E | 0.048 |
| Tritanopia (no blue cones) | #005958 | 0.025 |
| Achromatopsia (no color) | #4E4E4E | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23555E
#23555E
oklch(41.9% 0.055 211.1)
- #68413A
#68413A
oklch(41.9% 0.056 30.7)
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 #23555E, 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 Slate Gray #2F4F4F ΔE 0.027
- Petrol #005F6A ΔE 0.033
- Dark Teal #014D4E ΔE 0.042
- Dark Blue Green #005249 ΔE 0.043
- Charcoal #264653 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.048
- Dark Green Blue #1F6357 ΔE 0.051
Use #23555E 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.