#257964
Closest named color: Bluegreen (#017A79). oklch(52% 0.086 172.8), rgb(37, 121, 100).
Aa
White text reads best on this color (5.25:1).
About this color
#257964 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.086 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.032 away. White text reads best on it, at 5.25:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 3.99:1 |
| White text | 5.25:1 |
Values
| HEX | #257964 |
| RGB | rgb(37, 121, 100) |
| HSL | hsl(165, 53%, 31%) |
| OKLCH | oklch(52% 0.086 172.8) |
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 #257964 | 5.25:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #257964 | 3.99:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #257964 text on white | 5.25:1 | AA | Lc 75.8 | Fine for body text |
| #257964 text on black | 3.99:1 | AA large text | Lc -25.9 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#CBDED7
oklch(88.4% 0.022 171.7)
-
Step 300
300
#A6CABE
oklch(80.9% 0.042 173)
-
Step 400
400
#74AF9C
oklch(70.8% 0.068 172.1)
-
Step 500
500
#4C9A84
oklch(63% 0.085 172.8)
-
Step 600
600
#28856E
oklch(55.7% 0.093 172.8)
-
Step 700
700 (this color)
#257964
oklch(52% 0.086 172.8)
-
Step 800
800
#195C4B
oklch(42.8% 0.072 172.3)
-
Step 900
900
#1C4B3F
oklch(37.6% 0.055 173.8)
-
Step 950
950
#122C25
oklch(27% 0.035 173.9)
#257964 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) | #757163 | 0.089 |
| Deuteranopia (no green cones) | #696865 | 0.086 |
| Tritanopia (no blue cones) | #007A73 | 0.024 |
| Achromatopsia (no color) | #6C6C6C | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #257964
#257964
oklch(52% 0.086 172.8)
- #8F536D
#8F536D
oklch(51.9% 0.086 353)
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 #257964, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.032
- Dark Aquamarine #017371 ΔE 0.035
- Deep Turquoise #017374 ΔE 0.038
- Teal #008080 ΔE 0.042
- Deep Aqua #08787F ΔE 0.044
- Dark Aqua #05696B ΔE 0.059
- Jungle Green #048243 ΔE 0.064
- Sea Green #2E8B57 ΔE 0.066
Use #257964 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.