#23738C
Closest named color: Sea Blue (#047495). oklch(51.9% 0.084 223.1), rgb(35, 115, 140).
Aa
White text reads best on this color (5.38:1).
About this color
#23738C 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 0.016 away. White text reads best on it, at 5.38:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.90:1 |
| White text | 5.38:1 |
Values
| HEX | #23738C |
| RGB | rgb(35, 115, 140) |
| HSL | hsl(194, 60%, 34%) |
| OKLCH | oklch(51.9% 0.084 223.1) |
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 #23738C | 5.38:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #23738C | 3.90:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #23738C text on white | 5.38:1 | AA | Lc 76.5 | Fine for body text |
| #23738C text on black | 3.90:1 | AA large text | Lc -25.2 | 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
#4A95AE
oklch(63.2% 0.083 222.4)
-
Step 600
600
#277F9A
oklch(55.7% 0.09 222.7)
-
Step 700
700 (this color)
#23738C
oklch(51.9% 0.084 223.1)
-
Step 800
800
#18576B
oklch(42.7% 0.07 223.5)
-
Step 900
900
#1C4857
oklch(37.8% 0.054 223.5)
-
Step 950
950
#122A33
oklch(27% 0.034 224.8)
#23738C 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) | #65708D | 0.067 |
| Deuteranopia (no green cones) | #56668C | 0.058 |
| Tritanopia (no blue cones) | #007B7B | 0.044 |
| Achromatopsia (no color) | #6A6A6A | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23738C
#23738C
oklch(51.9% 0.084 223.1)
- #915840
#915840
oklch(51.9% 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 #23738C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.016
- Ocean #017B92 ΔE 0.024
- Ocean Blue #03719C ΔE 0.030
- Deep Aqua #08787F ΔE 0.032
- Muted Blue #3B719F ΔE 0.039
- Metallic Blue #4F738E ΔE 0.039
- Deep Turquoise #017374 ΔE 0.043
- Dull Blue #49759C ΔE 0.044
Use #23738C 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.