#315B5B
Closest named color: Dark Green Blue (#1F6357). oklch(44.1% 0.047 195.6), rgb(49, 91, 91).
Aa
White text reads best on this color (7.55:1).
About this color
#315B5B is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.047 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.031 away. White text reads best on it, at 7.55:1.
| 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 | 7.55:1 |
Values
| HEX | #315B5B |
| RGB | rgb(49, 91, 91) |
| HSL | hsl(180, 30%, 27%) |
| OKLCH | oklch(44.1% 0.047 195.6) |
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 #315B5B | 7.55:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #315B5B | 2.77:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #315B5B text on white | 7.55:1 | AAA | Lc 86.2 | Fine for body text |
| #315B5B text on black | 2.77:1 | Fails | Lc -15.9 | 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
#CEDCDC
oklch(88.4% 0.015 196.9)
-
Step 300
300
#ADC6C6
oklch(80.8% 0.027 196.6)
-
Step 400
400
#81AAA9
oklch(70.8% 0.044 194.3)
-
Step 500
500
#609494
oklch(63% 0.055 195.8)
-
Step 600
600
#447F7F
oklch(55.7% 0.062 195.5)
-
Step 700
700
#366B6B
oklch(49.2% 0.057 195.5)
-
Step 800
800 (this color)
#315B5B
oklch(44.1% 0.047 195.6)
-
Step 900
900
#294848
oklch(37.8% 0.037 195.7)
-
Step 950
950
#192A2A
oklch(27% 0.023 195.9)
#315B5B 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) | #56575B | 0.049 |
| Deuteranopia (no green cones) | #4F525B | 0.046 |
| Tritanopia (no blue cones) | #1C5D5B | 0.018 |
| Achromatopsia (no color) | #545454 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315B5B
#315B5B
oklch(44.1% 0.047 195.6)
- #6A484A
#6A484A
oklch(44% 0.047 15.3)
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 #315B5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.031
- Petrol #005F6A ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.039
- Deep Teal #00555A ΔE 0.039
- Dark Aqua #05696B ΔE 0.046
- YInMn Blue #415A77 ΔE 0.054
- Dark Blue Green #005249 ΔE 0.054
- Dark Teal #014D4E ΔE 0.062
Use #315B5B 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.