#25575D
Closest named color: Deep Teal (#00555A). oklch(42.5% 0.054 205.9), rgb(37, 87, 93).
Aa
White text reads best on this color (8.07:1).
About this color
#25575D is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.054 and its hue 206°. 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 8.07:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.60:1 |
| White text | 8.07:1 |
Values
| HEX | #25575D |
| RGB | rgb(37, 87, 93) |
| HSL | hsl(186, 43%, 25%) |
| OKLCH | oklch(42.5% 0.054 205.9) |
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 #25575D | 8.07:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #25575D | 2.60:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #25575D text on white | 8.07:1 | AAA | Lc 87.8 | Fine for body text |
| #25575D text on black | 2.60:1 | Fails | Lc -14.3 | 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 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
#CDDDDF
oklch(88.6% 0.017 205.8)
-
Step 300
300
#AAC7CB
oklch(80.9% 0.032 206.7)
-
Step 400
400
#7BAAB0
oklch(70.7% 0.051 205.9)
-
Step 500
500
#57959D
oklch(63.1% 0.065 206.3)
-
Step 600
600
#3A7F87
oklch(55.5% 0.07 205.5)
-
Step 700
700
#2B6B73
oklch(49% 0.066 206.5)
-
Step 800
800 (this color)
#25575D
oklch(42.5% 0.054 205.9)
-
Step 900
900
#24484D
oklch(37.7% 0.042 207.2)
-
Step 950
950
#162A2D
oklch(26.9% 0.026 207.9)
#25575D 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) | #50545D | 0.053 |
| Deuteranopia (no green cones) | #474D5D | 0.049 |
| Tritanopia (no blue cones) | #005A59 | 0.023 |
| Achromatopsia (no color) | #505050 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25575D
#25575D
oklch(42.5% 0.054 205.9)
- #69433F
#69433F
oklch(42.5% 0.054 26.1)
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 #25575D, 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 Slate Gray #2F4F4F ΔE 0.029
- Petrol #005F6A ΔE 0.029
- Dark Green Blue #1F6357 ΔE 0.044
- Dark Blue Green #005249 ΔE 0.044
- Dark Teal #014D4E ΔE 0.046
- Charcoal #264653 ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.055
Use #25575D 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.