#31675E
Closest named color: Dark Green Blue (#1F6357). oklch(47.4% 0.06 181.4), rgb(49, 103, 94).
Aa
White text reads best on this color (6.49:1).
About this color
#31675E is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.060 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.023 away. White text reads best on it, at 6.49:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.23:1 |
| White text | 6.49:1 |
Values
| HEX | #31675E |
| RGB | rgb(49, 103, 94) |
| HSL | hsl(170, 36%, 30%) |
| OKLCH | oklch(47.4% 0.06 181.4) |
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 #31675E | 6.49:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #31675E | 3.23:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #31675E text on white | 6.49:1 | AA | Lc 82.1 | Fine for body text |
| #31675E text on black | 3.23:1 | AA large text | Lc -19.8 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CEDDDA
oklch(88.5% 0.017 182.7)
-
Step 300
300
#ADC7C2
oklch(80.9% 0.029 182.7)
-
Step 400
400
#81AAA2
oklch(70.6% 0.046 181.6)
-
Step 500
500
#60958C
oklch(63% 0.058 182.5)
-
Step 600
600
#458076
oklch(55.7% 0.064 181.7)
-
Step 700
700 (this color)
#31675E
oklch(47.4% 0.06 181.4)
-
Step 800
800
#2D5851
oklch(42.7% 0.05 182.1)
-
Step 900
900
#294843
oklch(37.6% 0.038 182.8)
-
Step 950
950
#192A27
oklch(26.9% 0.023 182.2)
#31675E 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) | #63625E | 0.063 |
| Deuteranopia (no green cones) | #5A5B5F | 0.060 |
| Tritanopia (no blue cones) | #166964 | 0.018 |
| Achromatopsia (no color) | #5E5E5E | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31675E
#31675E
oklch(47.4% 0.06 181.4)
- #784E5A
#784E5A
oklch(47.4% 0.059 1)
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 #31675E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.023
- Dark Aqua #05696B ΔE 0.027
- Dark Aquamarine #017371 ΔE 0.041
- Deep Turquoise #017374 ΔE 0.043
- Petrol #005F6A ΔE 0.047
- Slate #516572 ΔE 0.053
- Bluegreen #017A79 ΔE 0.061
- Deep Aqua #08787F ΔE 0.061
Use #31675E 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.