#315F57
Closest named color: Dark Green Blue (#1F6357). oklch(45% 0.053 181.3), rgb(49, 95, 87).
Aa
White text reads best on this color (7.22:1).
About this color
#315F57 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.053 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.018 away. White text reads best on it, at 7.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.90:1 |
| White text | 7.22:1 |
Values
| HEX | #315F57 |
| RGB | rgb(49, 95, 87) |
| HSL | hsl(170, 32%, 28%) |
| OKLCH | oklch(45% 0.053 181.3) |
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 #315F57 | 7.22:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #315F57 | 2.90:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #315F57 text on white | 7.22:1 | AAA | Lc 85.0 | Fine for body text |
| #315F57 text on black | 2.90:1 | Fails | Lc -17.0 | 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
#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
#ACC7C2
oklch(80.8% 0.03 183.2)
-
Step 400
400
#7FABA2
oklch(70.7% 0.049 180.8)
-
Step 500
500
#5D968C
oklch(63.1% 0.062 181.9)
-
Step 600
600
#418176
oklch(55.7% 0.068 181.1)
-
Step 700
700
#326D63
oklch(49.2% 0.064 181)
-
Step 800
800 (this color)
#315F57
oklch(45% 0.053 181.3)
-
Step 900
900
#274943
oklch(37.7% 0.041 181.4)
-
Step 950
950
#182B27
oklch(27.1% 0.026 179.4)
#315F57 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) | #5B5A57 | 0.056 |
| Deuteranopia (no green cones) | #545558 | 0.053 |
| Tritanopia (no blue cones) | #1E605C | 0.016 |
| Achromatopsia (no color) | #575757 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315F57
#315F57
oklch(45% 0.053 181.3)
- #6E4953
#6E4953
oklch(45% 0.052 1.7)
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 #315F57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.018
- Petrol #005F6A ΔE 0.039
- Dark Aqua #05696B ΔE 0.039
- Deep Teal #00555A ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.051
- Pine #2B5D34 ΔE 0.054
- Dark Blue Green #005249 ΔE 0.059
- Spruce #0A5F38 ΔE 0.060
Use #315F57 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.