#256251
Closest named color: Dark Green Blue (#1F6357). oklch(45.1% 0.069 171.9), rgb(37, 98, 81).
Aa
White text reads best on this color (7.13:1).
About this color
#256251 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.069 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.009 away. White text reads best on it, at 7.13:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.94:1 |
| White text | 7.13:1 |
Values
| HEX | #256251 |
| RGB | rgb(37, 98, 81) |
| HSL | hsl(163, 45%, 26%) |
| OKLCH | oklch(45.1% 0.069 171.9) |
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 #256251 | 7.13:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #256251 | 2.94:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #256251 text on white | 7.13:1 | AAA | Lc 84.5 | Fine for body text |
| #256251 text on black | 2.94:1 | Fails | Lc -17.5 | 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 800.
-
Step 50
50
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CBDED7
oklch(88.4% 0.022 171.7)
-
Step 300
300
#A7CABD
oklch(81% 0.042 170.7)
-
Step 400
400
#76AE9C
oklch(70.7% 0.065 172.3)
-
Step 500
500
#4F9A84
oklch(63.1% 0.083 172.2)
-
Step 600
600
#2E846D
oklch(55.5% 0.09 172)
-
Step 700
700
#1F705B
oklch(49.1% 0.084 171.7)
-
Step 800
800 (this color)
#256251
oklch(45.1% 0.069 171.9)
-
Step 900
900
#1F4B3E
oklch(37.7% 0.054 171.4)
-
Step 950
950
#132C24
oklch(27% 0.035 170.7)
#256251 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) | #5F5C50 | 0.071 |
| Deuteranopia (no green cones) | #565552 | 0.069 |
| Tritanopia (no blue cones) | #00635D | 0.022 |
| Achromatopsia (no color) | #585858 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256251
#256251
oklch(45.1% 0.069 171.9)
- #73455A
#73455A
oklch(45.1% 0.069 351.4)
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 #256251, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.009
- Dark Aqua #05696B ΔE 0.040
- Pine #2B5D34 ΔE 0.041
- Spruce #0A5F38 ΔE 0.043
- Petrol #005F6A ΔE 0.047
- Deep Teal #00555A ΔE 0.055
- Dark Blue Green #005249 ΔE 0.059
- Dark Aquamarine #017371 ΔE 0.061
Use #256251 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.