#23717B
Closest named color: Deep Turquoise (#017374). oklch(50.7% 0.075 207.3), rgb(35, 113, 123).
Aa
White text reads best on this color (5.64:1).
About this color
#23717B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.075 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.020 away. White text reads best on it, at 5.64:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.71:1 |
| White text | 5.64:1 |
Values
| HEX | #23717B |
| RGB | rgb(35, 113, 123) |
| HSL | hsl(187, 56%, 31%) |
| OKLCH | oklch(50.7% 0.075 207.3) |
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 #23717B | 5.64:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #23717B | 3.71:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #23717B text on white | 5.64:1 | AA | Lc 77.9 | Fine for body text |
| #23717B text on black | 3.71:1 | 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
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CBDDE0
oklch(88.5% 0.02 208.8)
-
Step 300
300
#A6C8CD
oklch(81% 0.037 207.3)
-
Step 400
400
#75ABB3
oklch(70.6% 0.058 207.6)
-
Step 500
500
#4D96A0
oklch(63% 0.074 207.1)
-
Step 600
600
#2C808B
oklch(55.5% 0.08 207.4)
-
Step 700
700 (this color)
#23717B
oklch(50.7% 0.075 207.3)
-
Step 800
800
#1B5860
oklch(42.6% 0.062 207.5)
-
Step 900
900
#1E494F
oklch(37.8% 0.048 207.6)
-
Step 950
950
#132B2E
oklch(27.1% 0.03 206.1)
#23717B 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 | 0.073 |
| Deuteranopia (no green cones) | #5A637B | 0.066 |
| Tritanopia (no blue cones) | #007674 | 0.025 |
| Achromatopsia (no color) | #676767 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23717B
#23717B
oklch(50.7% 0.075 207.3)
- #8B544D
#8B544D
oklch(50.7% 0.075 27.8)
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 #23717B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.020
- Deep Aqua #08787F ΔE 0.021
- Dark Aquamarine #017371 ΔE 0.024
- Bluegreen #017A79 ΔE 0.030
- Dark Aqua #05696B ΔE 0.037
- Ocean #017B92 ΔE 0.040
- Sea Blue #047495 ΔE 0.040
- Teal #008080 ΔE 0.045
Use #23717B 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.