#23728B
Closest named color: Sea Blue (#047495). oklch(51.6% 0.084 223.4), rgb(35, 114, 139).
Aa
White text reads best on this color (5.45:1).
About this color
#23728B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.084 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.017 away. White text reads best on it, at 5.45:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.85:1 |
| White text | 5.45:1 |
Values
| HEX | #23728B |
| RGB | rgb(35, 114, 139) |
| HSL | hsl(194, 60%, 34%) |
| OKLCH | oklch(51.6% 0.084 223.4) |
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 #23728B | 5.45:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #23728B | 3.85:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #23728B text on white | 5.45:1 | AA | Lc 76.9 | Fine for body text |
| #23728B text on black | 3.85:1 | AA large text | Lc -24.9 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADDE4
oklch(88.5% 0.023 221.8)
-
Step 300
300
#A5C7D4
oklch(80.9% 0.041 223)
-
Step 400
400
#73AABE
oklch(70.7% 0.065 222.8)
-
Step 500
500
#4B94AE
oklch(63% 0.082 223.8)
-
Step 600
600
#287E9A
oklch(55.5% 0.09 224)
-
Step 700
700 (this color)
#23728B
oklch(51.6% 0.084 223.4)
-
Step 800
800
#19576B
oklch(42.7% 0.069 223.8)
-
Step 900
900
#1C4857
oklch(37.8% 0.054 223.5)
-
Step 950
950
#122A33
oklch(27% 0.034 224.8)
#23728B 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) | #646F8C | 0.066 |
| Deuteranopia (no green cones) | #56658B | 0.059 |
| Tritanopia (no blue cones) | #007A7A | 0.044 |
| Achromatopsia (no color) | #696969 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23728B
#23728B
oklch(51.6% 0.084 223.4)
- #90573F
#90573F
oklch(51.6% 0.084 43.4)
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 #23728B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.017
- Ocean #017B92 ΔE 0.026
- Ocean Blue #03719C ΔE 0.030
- Deep Aqua #08787F ΔE 0.032
- Muted Blue #3B719F ΔE 0.040
- Metallic Blue #4F738E ΔE 0.040
- Deep Turquoise #017374 ΔE 0.042
- Peacock Blue #016795 ΔE 0.044
Use #23728B 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.