#255648
Closest named color: Dark Blue Green (#005249). oklch(41.5% 0.059 172.2), rgb(37, 86, 72).
Aa
White text reads best on this color (8.38:1).
About this color
#255648 is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.059 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.027 away. White text reads best on it, at 8.38:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.50:1 |
| White text | 8.38:1 |
Values
| HEX | #255648 |
| RGB | rgb(37, 86, 72) |
| HSL | hsl(163, 40%, 24%) |
| OKLCH | oklch(41.5% 0.059 172.2) |
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 #255648 | 8.38:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #255648 | 2.50:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #255648 text on white | 8.38:1 | AAA | Lc 88.8 | Fine for body text |
| #255648 text on black | 2.50:1 | Fails | Lc -13.4 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CDDDD8
oklch(88.4% 0.018 175.3)
-
Step 300
300
#ABC8BE
oklch(80.8% 0.034 172.6)
-
Step 400
400
#7EAC9D
oklch(70.7% 0.054 172.6)
-
Step 500
500
#5B9885
oklch(63.2% 0.07 172.1)
-
Step 600
600
#3E826E
oklch(55.6% 0.077 171.8)
-
Step 700
700
#306E5C
oklch(49.2% 0.071 171.7)
-
Step 800
800 (this color)
#255648
oklch(41.5% 0.059 172.2)
-
Step 900
900
#264A3F
oklch(37.8% 0.046 171.9)
-
Step 950
950
#172B25
oklch(27% 0.028 173)
#255648 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) | #535147 | 0.060 |
| Deuteranopia (no green cones) | #4C4B49 | 0.059 |
| Tritanopia (no blue cones) | #0E5752 | 0.019 |
| Achromatopsia (no color) | #4D4D4D | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #255648
#255648
oklch(41.5% 0.059 172.2)
- #643E4F
#643E4F
oklch(41.4% 0.058 351.6)
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 #255648, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.027
- Dark Slate Gray #2F4F4F ΔE 0.031
- Deep Teal #00555A ΔE 0.035
- Dark Green Blue #1F6357 ΔE 0.042
- Dark Teal #014D4E ΔE 0.043
- Pine #2B5D34 ΔE 0.044
- Spruce #0A5F38 ΔE 0.048
- Petrol #005F6A ΔE 0.054
Use #255648 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.