#31707B
Closest named color: Deep Aqua (#08787F). oklch(50.9% 0.066 210.6), rgb(49, 112, 123).
Aa
White text reads best on this color (5.62:1).
About this color
#31707B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.066 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.027 away. White text reads best on it, at 5.62:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.73:1 |
| White text | 5.62:1 |
Values
| HEX | #31707B |
| RGB | rgb(49, 112, 123) |
| HSL | hsl(189, 43%, 34%) |
| OKLCH | oklch(50.9% 0.066 210.6) |
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 #31707B | 5.62:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #31707B | 3.73:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #31707B text on white | 5.62:1 | AA | Lc 77.9 | Fine for body text |
| #31707B text on black | 3.73:1 | AA large text | Lc -23.8 | 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 700.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CCDDE0
oklch(88.6% 0.019 209.4)
-
Step 300
300
#AAC7CC
oklch(81% 0.032 209.2)
-
Step 400
400
#7BAAB3
oklch(70.8% 0.052 210.7)
-
Step 500
500
#5795A0
oklch(63.2% 0.066 210.1)
-
Step 600
600
#3A7F8B
oklch(55.7% 0.071 210.5)
-
Step 700
700 (this color)
#31707B
oklch(50.9% 0.066 210.6)
-
Step 800
800
#255760
oklch(42.6% 0.055 211)
-
Step 900
900
#24484E
oklch(37.7% 0.043 209.4)
-
Step 950
950
#162A2E
oklch(27% 0.027 211.7)
#31707B 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) | #676C7C | 0.063 |
| Deuteranopia (no green cones) | #5B647B | 0.056 |
| Tritanopia (no blue cones) | #007573 | 0.032 |
| Achromatopsia (no color) | #676767 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31707B
#31707B
oklch(50.9% 0.066 210.6)
- #88574F
#88574F
oklch(50.9% 0.067 29.7)
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 #31707B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.027
- Deep Turquoise #017374 ΔE 0.028
- Dark Aquamarine #017371 ΔE 0.031
- Bluegreen #017A79 ΔE 0.036
- Dark Aqua #05696B ΔE 0.042
- Sea Blue #047495 ΔE 0.042
- Ocean #017B92 ΔE 0.042
- Slate #516572 ΔE 0.042
Use #31707B 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.