#254F58
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.1% 0.049 213.5), rgb(37, 79, 88).
Aa
White text reads best on this color (8.98:1).
About this color
#254F58 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.049 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.017 away. White text reads best on it, at 8.98:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.33:1 |
| White text | 8.98:1 |
Values
| HEX | #254F58 |
| RGB | rgb(37, 79, 88) |
| HSL | hsl(191, 41%, 25%) |
| OKLCH | oklch(40.1% 0.049 213.5) |
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 #254F58 | 8.98:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #254F58 | 2.33:1 | Fails | Lc 13.5 | Not readable |
| #254F58 text on white | 8.98:1 | AAA | Lc 90.5 | Preferred for body text |
| #254F58 text on black | 2.33:1 | Fails | Lc -11.8 | 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
#CBDDE1
oklch(88.5% 0.02 212.6)
-
Step 300
300
#A6C7CF
oklch(80.8% 0.037 214)
-
Step 400
400
#75ABB7
oklch(70.8% 0.059 213.1)
-
Step 500
500
#4E95A5
oklch(63% 0.075 214.2)
-
Step 600
600
#2D8090
oklch(55.7% 0.082 212.9)
-
Step 700
700
#1E6C7B
oklch(49.2% 0.076 213.5)
-
Step 800
800
#1C5864
oklch(42.8% 0.063 213.5)
-
Step 900
900 (this color)
#254F58
oklch(40.1% 0.049 213.5)
-
Step 950
950
#132A30
oklch(26.9% 0.031 216.7)
#254F58 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) | #484D59 | 0.045 |
| Deuteranopia (no green cones) | #404758 | 0.040 |
| Tritanopia (no blue cones) | #005352 | 0.028 |
| Achromatopsia (no color) | #494949 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #254F58
#254F58
oklch(40.1% 0.049 213.5)
- #603E37
#603E37
oklch(40.1% 0.05 32.1)
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 #254F58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.017
- Deep Teal #00555A ΔE 0.025
- Charcoal #264653 ΔE 0.029
- Dark Teal #014D4E ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.031
- Dark Blue Green #005249 ΔE 0.039
- Petrol #005F6A ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.052
Use #254F58 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.