#315B59
Closest named color: Dark Green Blue (#1F6357). oklch(44% 0.047 191.6), rgb(49, 91, 89).
Aa
White text reads best on this color (7.57:1).
About this color
#315B59 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.047 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.030 away. White text reads best on it, at 7.57:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.77:1 |
| White text | 7.57:1 |
Values
| HEX | #315B59 |
| RGB | rgb(49, 91, 89) |
| HSL | hsl(177, 30%, 27%) |
| OKLCH | oklch(44% 0.047 191.6) |
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 #315B59 | 7.57:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #315B59 | 2.77:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #315B59 text on white | 7.57:1 | AAA | Lc 86.2 | Fine for body text |
| #315B59 text on black | 2.77:1 | Fails | Lc -15.8 | 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 800.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CEDDDB
oklch(88.6% 0.016 187.3)
-
Step 300
300
#ADC7C5
oklch(81% 0.028 190.9)
-
Step 400
400
#81AAA7
oklch(70.7% 0.045 190.6)
-
Step 500
500
#609592
oklch(63.2% 0.057 191.3)
-
Step 600
600
#457F7C
oklch(55.6% 0.061 191.2)
-
Step 700
700
#366B69
oklch(49.1% 0.057 192.2)
-
Step 800
800 (this color)
#315B59
oklch(44% 0.047 191.6)
-
Step 900
900
#294846
oklch(37.7% 0.037 190.4)
-
Step 950
950
#192A29
oklch(27% 0.023 191.2)
#315B59 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) | #575759 | 0.051 |
| Deuteranopia (no green cones) | #4F5259 | 0.046 |
| Tritanopia (no blue cones) | #1E5D5A | 0.016 |
| Achromatopsia (no color) | #545454 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315B59
#315B59
oklch(44% 0.047 191.6)
- #6A484C
#6A484C
oklch(44.1% 0.047 11.4)
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 #315B59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.030
- Petrol #005F6A ΔE 0.034
- Dark Slate Gray #2F4F4F ΔE 0.038
- Deep Teal #00555A ΔE 0.039
- Dark Aqua #05696B ΔE 0.046
- Dark Blue Green #005249 ΔE 0.053
- YInMn Blue #415A77 ΔE 0.057
- Dark Teal #014D4E ΔE 0.062
Use #315B59 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.