#31707C
Closest named color: Deep Aqua (#08787F). oklch(50.9% 0.067 211.9), rgb(49, 112, 124).
Aa
White text reads best on this color (5.61:1).
About this color
#31707C is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.067 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.028 away. White text reads best on it, at 5.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.73:1 |
| White text | 5.61:1 |
Values
| HEX | #31707C |
| RGB | rgb(49, 112, 124) |
| HSL | hsl(190, 43%, 34%) |
| OKLCH | oklch(50.9% 0.067 211.9) |
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 #31707C | 5.61:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #31707C | 3.73:1 | AA large text | Lc 26.2 | Dividers and decoration only |
| #31707C text on white | 5.61:1 | AA | Lc 77.9 | Fine for body text |
| #31707C text on black | 3.73:1 | AA large text | Lc -23.9 | 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 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
#AAC7CD
oklch(81% 0.032 211.6)
-
Step 400
400
#7BAAB3
oklch(70.8% 0.052 210.7)
-
Step 500
500
#5794A1
oklch(63% 0.066 212.8)
-
Step 600
600
#3A7F8C
oklch(55.7% 0.072 211.7)
-
Step 700
700 (this color)
#31707C
oklch(50.9% 0.067 211.9)
-
Step 800
800
#255761
oklch(42.7% 0.056 212.7)
-
Step 900
900
#24484F
oklch(37.8% 0.043 211.7)
-
Step 950
950
#162A2E
oklch(27% 0.027 211.7)
#31707C 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) | #666C7D | 0.062 |
| Deuteranopia (no green cones) | #5B647C | 0.056 |
| Tritanopia (no blue cones) | #007574 | 0.032 |
| Achromatopsia (no color) | #676767 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31707C
#31707C
oklch(50.9% 0.067 211.9)
- #88574E
#88574E
oklch(50.9% 0.067 30.9)
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 #31707C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.028
- Deep Turquoise #017374 ΔE 0.029
- Dark Aquamarine #017371 ΔE 0.032
- Bluegreen #017A79 ΔE 0.037
- Sea Blue #047495 ΔE 0.040
- Ocean #017B92 ΔE 0.041
- Slate #516572 ΔE 0.042
- Dark Aqua #05696B ΔE 0.043
Use #31707C 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.