#237291
Closest named color: Sea Blue (#047495). oklch(51.9% 0.088 228.7), rgb(35, 114, 145).
Aa
White text reads best on this color (5.40:1).
About this color
#237291 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.088 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.011 away. White text reads best on it, at 5.40:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.88:1 |
| White text | 5.40:1 |
Values
| HEX | #237291 |
| RGB | rgb(35, 114, 145) |
| HSL | hsl(197, 61%, 35%) |
| OKLCH | oklch(51.9% 0.088 228.7) |
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 #237291 | 5.40:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #237291 | 3.88:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #237291 text on white | 5.40:1 | AA | Lc 76.6 | Fine for body text |
| #237291 text on black | 3.88:1 | AA large text | Lc -25.1 | 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
#CADDE6
oklch(88.6% 0.024 227.8)
-
Step 300
300
#A5C7D7
oklch(81% 0.043 228)
-
Step 400
400
#72A9C3
oklch(70.6% 0.069 229.2)
-
Step 500
500
#4A94B4
oklch(63.2% 0.088 228.7)
-
Step 600
600
#277D9F
oklch(55.5% 0.095 228.9)
-
Step 700
700 (this color)
#237291
oklch(51.9% 0.088 228.7)
-
Step 800
800
#18566F
oklch(42.6% 0.073 229.5)
-
Step 900
900
#1B475A
oklch(37.6% 0.058 229.5)
-
Step 950
950
#112A34
oklch(27% 0.036 226.6)
#237291 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) | #627093 | 0.063 |
| Deuteranopia (no green cones) | #536591 | 0.055 |
| Tritanopia (no blue cones) | #007B7C | 0.051 |
| Achromatopsia (no color) | #6A6A6A | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #237291
#237291
oklch(51.9% 0.088 228.7)
- #925839
#925839
oklch(51.9% 0.089 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 #237291, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.011
- Ocean Blue #03719C ΔE 0.021
- Ocean #017B92 ΔE 0.027
- Muted Blue #3B719F ΔE 0.031
- Metallic Blue #4F738E ΔE 0.039
- Dull Blue #49759C ΔE 0.039
- Peacock Blue #016795 ΔE 0.040
- Deep Aqua #08787F ΔE 0.041
Use #237291 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.