#317A71
Closest named color: Bluegreen (#017A79). oklch(53.1% 0.074 184.2), rgb(49, 122, 113).
Aa
White text reads best on this color (5.05:1).
About this color
#317A71 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.074 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.022 away. White text reads best on it, at 5.05:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #317A71 |
| RGB | rgb(49, 122, 113) |
| HSL | hsl(173, 43%, 34%) |
| OKLCH | oklch(53.1% 0.074 184.2) |
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 #317A71 | 5.05:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #317A71 | 4.15:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #317A71 text on white | 5.05:1 | AA | Lc 74.7 | Content text, not long reading |
| #317A71 text on black | 4.15:1 | AA large text | Lc -27.0 | 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 600.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CDDDDA
oklch(88.5% 0.018 183.5)
-
Step 300
300
#AAC8C3
oklch(80.9% 0.033 184.4)
-
Step 400
400
#7BACA4
oklch(70.7% 0.053 183.6)
-
Step 500
500
#57978E
oklch(63.1% 0.068 184.2)
-
Step 600
600 (this color)
#317A71
oklch(53.1% 0.074 184.2)
-
Step 700
700
#2B6D65
oklch(49% 0.068 184.4)
-
Step 800
800
#255953
oklch(42.7% 0.056 185.2)
-
Step 900
900
#244944
oklch(37.6% 0.044 184.3)
-
Step 950
950
#162B28
oklch(27% 0.028 184.2)
#317A71 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) | #747371 | 0.078 |
| Deuteranopia (no green cones) | #696B72 | 0.074 |
| Tritanopia (no blue cones) | #007C77 | 0.019 |
| Achromatopsia (no color) | #6F6F6F | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #317A71
#317A71
oklch(53.1% 0.074 184.2)
- #905A67
#905A67
oklch(53.1% 0.073 4.2)
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 #317A71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.022
- Teal #008080 ΔE 0.027
- Deep Aqua #08787F ΔE 0.030
- Dark Aquamarine #017371 ΔE 0.033
- Deep Turquoise #017374 ΔE 0.034
- Ocean #017B92 ΔE 0.053
- Dark Cyan #008B8B ΔE 0.054
- Dark Aqua #05696B ΔE 0.061
Use #317A71 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.