#256B58
Closest named color: Dark Green Blue (#1F6357). oklch(47.8% 0.076 171.9), rgb(37, 107, 88).
Aa
White text reads best on this color (6.32:1).
About this color
#256B58 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 48%, its chroma 0.076 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.027 away. White text reads best on it, at 6.32:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.32:1 |
| White text | 6.32:1 |
Values
| HEX | #256B58 |
| RGB | rgb(37, 107, 88) |
| HSL | hsl(164, 49%, 28%) |
| OKLCH | oklch(47.8% 0.076 171.9) |
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 #256B58 | 6.32:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #256B58 | 3.32:1 | AA large text | Lc 22.8 | Dividers and decoration only |
| #256B58 text on white | 6.32:1 | AA | Lc 81.2 | Fine for body text |
| #256B58 text on black | 3.32:1 | AA large text | Lc -20.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED7
oklch(88.5% 0.021 170.6)
-
Step 300
300
#AAC9BE
oklch(81% 0.037 171.9)
-
Step 400
400
#7AAD9C
oklch(70.7% 0.06 171.8)
-
Step 500
500
#569984
oklch(63.2% 0.076 171.5)
-
Step 600
600
#38836E
oklch(55.6% 0.082 172.2)
-
Step 700
700 (this color)
#256B58
oklch(47.8% 0.076 171.9)
-
Step 800
800
#245A4B
oklch(42.6% 0.063 172.3)
-
Step 900
900
#234A3E
oklch(37.6% 0.049 171.3)
-
Step 950
950
#152B25
oklch(26.9% 0.03 174.4)
#256B58 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) | #686457 | 0.079 |
| Deuteranopia (no green cones) | #5E5D59 | 0.075 |
| Tritanopia (no blue cones) | #006C65 | 0.022 |
| Achromatopsia (no color) | #606060 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256B58
#256B58
oklch(47.8% 0.076 171.9)
- #7E4A62
#7E4A62
oklch(47.8% 0.077 351.3)
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 #256B58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.027
- Dark Aqua #05696B ΔE 0.035
- Dark Aquamarine #017371 ΔE 0.039
- Deep Turquoise #017374 ΔE 0.043
- Bluegreen #017A79 ΔE 0.057
- Pine #2B5D34 ΔE 0.058
- Petrol #005F6A ΔE 0.059
- Spruce #0A5F38 ΔE 0.059
Use #256B58 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.