#23799B
Closest named color: Ocean (#017B92). oklch(54.2% 0.095 229.3), rgb(35, 121, 155).
Aa
White text reads best on this color (4.90:1).
About this color
#23799B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.095 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.021 away. White text reads best on it, at 4.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.27:1 |
| White text | 4.90:1 |
Values
| HEX | #23799B |
| RGB | rgb(35, 121, 155) |
| HSL | hsl(197, 63%, 37%) |
| OKLCH | oklch(54.2% 0.095 229.3) |
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 #23799B | 4.90:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #23799B | 4.27:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #23799B text on white | 4.90:1 | AA | Lc 73.7 | Content text, not long reading |
| #23799B text on black | 4.27:1 | AA large text | Lc -28.0 | 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 600.
-
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
#A5C6D7
oklch(80.8% 0.043 230.3)
-
Step 400
400
#73A9C3
oklch(70.7% 0.068 229.7)
-
Step 500
500
#4B93B4
oklch(63% 0.087 230.1)
-
Step 600
600 (this color)
#23799B
oklch(54.2% 0.095 229.3)
-
Step 700
700
#1A6A88
oklch(49.2% 0.087 228.5)
-
Step 800
800
#19566F
oklch(42.7% 0.073 229.7)
-
Step 900
900
#1C475A
oklch(37.7% 0.057 230)
-
Step 950
950
#122A34
oklch(27.1% 0.035 227.4)
#23799B 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) | #67779D | 0.066 |
| Deuteranopia (no green cones) | #576C9B | 0.056 |
| Tritanopia (no blue cones) | #008284 | 0.053 |
| Achromatopsia (no color) | #717171 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23799B
#23799B
oklch(54.2% 0.095 229.3)
- #9B5D3B
#9B5D3B
oklch(54.1% 0.095 48.6)
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 #23799B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.021
- Sea Blue #047495 ΔE 0.022
- Cerulean #457B9D ΔE 0.028
- Ocean Blue #03719C ΔE 0.029
- Muted Blue #3B719F ΔE 0.029
- Dull Blue #49759C ΔE 0.031
- Nice Blue #107AB0 ΔE 0.033
- Flat Blue #3C73A8 ΔE 0.035
Use #23799B 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.