#23728F
Closest named color: Sea Blue (#047495). oklch(51.8% 0.087 227), rgb(35, 114, 143).
Aa
White text reads best on this color (5.41:1).
About this color
#23728F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.087 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.013 away. White text reads best on it, at 5.41:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.87:1 |
| White text | 5.41:1 |
Values
| HEX | #23728F |
| RGB | rgb(35, 114, 143) |
| HSL | hsl(196, 61%, 35%) |
| OKLCH | oklch(51.8% 0.087 227) |
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 #23728F | 5.41:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #23728F | 3.87:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #23728F text on white | 5.41:1 | AA | Lc 76.7 | Fine for body text |
| #23728F text on black | 3.87:1 | AA large text | Lc -25.0 | 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
#CADDE5
oklch(88.6% 0.023 224.9)
-
Step 300
300
#A5C7D6
oklch(81% 0.042 226.4)
-
Step 400
400
#73AAC1
oklch(70.8% 0.067 226.1)
-
Step 500
500
#4A94B2
oklch(63.1% 0.086 227.1)
-
Step 600
600
#277E9E
oklch(55.7% 0.094 227.1)
-
Step 700
700 (this color)
#23728F
oklch(51.8% 0.087 227)
-
Step 800
800
#18576D
oklch(42.8% 0.071 225.9)
-
Step 900
900
#1C4759
oklch(37.6% 0.056 228.6)
-
Step 950
950
#122A34
oklch(27.1% 0.035 227.4)
#23728F 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) | #627090 | 0.063 |
| Deuteranopia (no green cones) | #54658F | 0.056 |
| Tritanopia (no blue cones) | #007A7C | 0.047 |
| Achromatopsia (no color) | #6A6A6A | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23728F
#23728F
oklch(51.8% 0.087 227)
- #91583B
#91583B
oklch(51.8% 0.087 47.2)
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 #23728F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.013
- Ocean Blue #03719C ΔE 0.024
- Ocean #017B92 ΔE 0.027
- Muted Blue #3B719F ΔE 0.034
- Deep Aqua #08787F ΔE 0.038
- Metallic Blue #4F738E ΔE 0.039
- Dull Blue #49759C ΔE 0.041
- Peacock Blue #016795 ΔE 0.041
Use #23728F 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.