#23737D
Closest named color: Deep Aqua (#08787F). oklch(51.3% 0.076 207.1), rgb(35, 115, 125).
Aa
White text reads best on this color (5.49:1).
About this color
#23737D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.076 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.016 away. White text reads best on it, at 5.49:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.81:1 |
| White text | 5.49:1 |
Values
| HEX | #23737D |
| RGB | rgb(35, 115, 125) |
| HSL | hsl(187, 56%, 31%) |
| OKLCH | oklch(51.3% 0.076 207.1) |
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 #23737D | 5.49:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #23737D | 3.81:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #23737D text on white | 5.49:1 | AA | Lc 77.2 | Fine for body text |
| #23737D text on black | 3.81:1 | AA large text | Lc -24.6 | 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
#CADDE0
oklch(88.4% 0.021 208.1)
-
Step 300
300
#A6C8CD
oklch(81% 0.037 207.3)
-
Step 400
400
#74ABB3
oklch(70.6% 0.059 207.4)
-
Step 500
500
#4C96A1
oklch(63% 0.075 208.1)
-
Step 600
600
#29818C
oklch(55.7% 0.082 207)
-
Step 700
700 (this color)
#23737D
oklch(51.3% 0.076 207.1)
-
Step 800
800
#1A5960
oklch(42.8% 0.063 205.7)
-
Step 900
900
#1D494F
oklch(37.7% 0.049 207.4)
-
Step 950
950
#122B2E
oklch(27.1% 0.031 205.7)
#23737D 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) | #696E7E | 0.074 |
| Deuteranopia (no green cones) | #5C657D | 0.067 |
| Tritanopia (no blue cones) | #007876 | 0.025 |
| Achromatopsia (no color) | #696969 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23737D
#23737D
oklch(51.3% 0.076 207.1)
- #8E554F
#8E554F
oklch(51.3% 0.077 26.5)
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 #23737D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.016
- Deep Turquoise #017374 ΔE 0.021
- Dark Aquamarine #017371 ΔE 0.025
- Bluegreen #017A79 ΔE 0.026
- Ocean #017B92 ΔE 0.035
- Sea Blue #047495 ΔE 0.038
- Teal #008080 ΔE 0.039
- Dark Aqua #05696B ΔE 0.042
Use #23737D 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.