#31756F
Closest named color: Bluegreen (#017A79). oklch(51.7% 0.069 187.4), rgb(49, 117, 111).
Aa
White text reads best on this color (5.37:1).
About this color
#31756F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.069 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.023 away. White text reads best on it, at 5.37:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 3.90:1 |
| White text | 5.37:1 |
Values
| HEX | #31756F |
| RGB | rgb(49, 117, 111) |
| HSL | hsl(175, 41%, 33%) |
| OKLCH | oklch(51.7% 0.069 187.4) |
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 #31756F | 5.37:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #31756F | 3.90:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #31756F text on white | 5.37:1 | AA | Lc 76.6 | Fine for body text |
| #31756F text on black | 3.90:1 | AA large text | Lc -25.1 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CCDDDB
oklch(88.4% 0.018 188.3)
-
Step 300
300
#A9C8C4
oklch(80.9% 0.034 187)
-
Step 400
400
#7AACA6
oklch(70.7% 0.054 186.7)
-
Step 500
500
#559791
oklch(63.1% 0.068 188)
-
Step 600
600
#37817B
oklch(55.5% 0.074 188)
-
Step 700
700 (this color)
#31756F
oklch(51.7% 0.069 187.4)
-
Step 800
800
#235954
oklch(42.6% 0.058 187)
-
Step 900
900
#234946
oklch(37.6% 0.044 188.8)
-
Step 950
950
#152B29
oklch(27% 0.028 188.1)
#31756F 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) | #6F6F6F | 0.073 |
| Deuteranopia (no green cones) | #646770 | 0.069 |
| Tritanopia (no blue cones) | #007873 | 0.020 |
| Achromatopsia (no color) | #6A6A6A | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31756F
#31756F
oklch(51.7% 0.069 187.4)
- #8B5761
#8B5761
oklch(51.8% 0.07 7.3)
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 #31756F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.023
- Dark Aquamarine #017371 ΔE 0.023
- Deep Turquoise #017374 ΔE 0.024
- Deep Aqua #08787F ΔE 0.027
- Teal #008080 ΔE 0.037
- Dark Aqua #05696B ΔE 0.047
- Ocean #017B92 ΔE 0.053
- Slate #516572 ΔE 0.058
Use #31756F 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.