#315F63
Closest named color: Petrol (#005F6A). oklch(45.5% 0.051 202.9), rgb(49, 95, 99).
Aa
White text reads best on this color (7.12:1).
About this color
#315F63 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.051 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.028 away. White text reads best on it, at 7.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.94:1 |
| White text | 7.12:1 |
Values
| HEX | #315F63 |
| RGB | rgb(49, 95, 99) |
| HSL | hsl(185, 34%, 29%) |
| OKLCH | oklch(45.5% 0.051 202.9) |
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 #315F63 | 7.12:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #315F63 | 2.94:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #315F63 text on white | 7.12:1 | AAA | Lc 84.6 | Fine for body text |
| #315F63 text on black | 2.94:1 | Fails | Lc -17.4 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CDDDDE
oklch(88.6% 0.017 201.4)
-
Step 300
300
#ABC7C9
oklch(81% 0.03 201.9)
-
Step 400
400
#7EAAAE
oklch(70.8% 0.048 203.1)
-
Step 500
500
#5B959A
oklch(63.2% 0.061 202.8)
-
Step 600
600
#3F7F84
oklch(55.6% 0.066 202.2)
-
Step 700
700
#306B70
oklch(49.1% 0.062 202.8)
-
Step 800
800 (this color)
#315F63
oklch(45.5% 0.051 202.9)
-
Step 900
900
#26484B
oklch(37.7% 0.04 203)
-
Step 950
950
#172A2C
oklch(27% 0.025 204.3)
#315F63 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) | #595C63 | 0.051 |
| Deuteranopia (no green cones) | #515563 | 0.048 |
| Tritanopia (no blue cones) | #156260 | 0.023 |
| Achromatopsia (no color) | #585858 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315F63
#315F63
oklch(45.5% 0.051 202.9)
- #704B49
#704B49
oklch(45.3% 0.051 22.7)
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 #315F63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.028
- Dark Green Blue #1F6357 ΔE 0.031
- Dark Aqua #05696B ΔE 0.034
- YInMn Blue #415A77 ΔE 0.046
- Deep Teal #00555A ΔE 0.049
- Slate #516572 ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.053
- Dark Aquamarine #017371 ΔE 0.060
Use #315F63 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.