#315F59
Closest named color: Dark Green Blue (#1F6357). oklch(45.1% 0.052 184.7), rgb(49, 95, 89).
Aa
White text reads best on this color (7.21:1).
About this color
#315F59 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.052 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.020 away. White text reads best on it, at 7.21:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.91:1 |
| White text | 7.21:1 |
Values
| HEX | #315F59 |
| RGB | rgb(49, 95, 89) |
| HSL | hsl(172, 32%, 28%) |
| OKLCH | oklch(45.1% 0.052 184.7) |
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 #315F59 | 7.21:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #315F59 | 2.91:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #315F59 text on white | 7.21:1 | AAA | Lc 84.9 | Fine for body text |
| #315F59 text on black | 2.91:1 | Fails | Lc -17.1 | 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 800.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
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
#ACC7C3
oklch(80.8% 0.03 185.8)
-
Step 400
400
#7FABA4
oklch(70.7% 0.048 184.1)
-
Step 500
500
#5C968E
oklch(63.1% 0.062 184.7)
-
Step 600
600
#408078
oklch(55.5% 0.067 184.9)
-
Step 700
700
#326C65
oklch(49% 0.062 185)
-
Step 800
800 (this color)
#315F59
oklch(45.1% 0.052 184.7)
-
Step 900
900
#274944
oklch(37.8% 0.041 183.6)
-
Step 950
950
#172B28
oklch(27.1% 0.027 183.8)
#315F59 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) | #5B5A59 | 0.056 |
| Deuteranopia (no green cones) | #53555A | 0.052 |
| Tritanopia (no blue cones) | #1C615D | 0.016 |
| Achromatopsia (no color) | #575757 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315F59
#315F59
oklch(45.1% 0.052 184.7)
- #6E4952
#6E4952
oklch(45% 0.052 3.4)
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 #315F59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.020
- Petrol #005F6A ΔE 0.036
- Dark Aqua #05696B ΔE 0.038
- Deep Teal #00555A ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.051
- Pine #2B5D34 ΔE 0.058
- Dark Blue Green #005249 ΔE 0.060
- Slate #516572 ΔE 0.060
Use #315F59 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.