#23637D
Closest named color: Denim (#3B638C). oklch(47.1% 0.076 228.7), rgb(35, 99, 125).
Aa
White text reads best on this color (6.66:1).
About this color
#23637D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 47%, its chroma 0.076 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.035 away. White text reads best on it, at 6.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.15:1 |
| White text | 6.66:1 |
Values
| HEX | #23637D |
| RGB | rgb(35, 99, 125) |
| HSL | hsl(197, 56%, 31%) |
| OKLCH | oklch(47.1% 0.076 228.7) |
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 #23637D | 6.66:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #23637D | 3.15:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #23637D text on white | 6.66:1 | AA | Lc 82.6 | Fine for body text |
| #23637D text on black | 3.15:1 | AA large text | Lc -19.3 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE4
oklch(88.5% 0.02 229.1)
-
Step 300
300
#A9C6D4
oklch(81% 0.037 228.5)
-
Step 400
400
#7AA8BE
oklch(70.7% 0.059 229.1)
-
Step 500
500
#5692AE
oklch(63% 0.075 229.7)
-
Step 600
600
#387C99
oklch(55.5% 0.082 228.8)
-
Step 700
700 (this color)
#23637D
oklch(47.1% 0.076 228.7)
-
Step 800
800
#24566A
oklch(42.8% 0.063 227.3)
-
Step 900
900
#234756
oklch(37.8% 0.049 227.3)
-
Step 950
950
#152933
oklch(26.9% 0.032 231.4)
#23637D 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) | #55617E | 0.054 |
| Deuteranopia (no green cones) | #49587D | 0.048 |
| Tritanopia (no blue cones) | #006A6C | 0.043 |
| Achromatopsia (no color) | #5C5C5C | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23637D
#23637D
oklch(47.1% 0.076 228.7)
- #7E4D33
#7E4D33
oklch(47.1% 0.077 48.1)
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 #23637D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.035
- YInMn Blue #415A77 ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.037
- Petrol #005F6A ΔE 0.038
- Peacock Blue #016795 ΔE 0.038
- Dark Aqua #05696B ΔE 0.042
- Slate #516572 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.052
Use #23637D 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.