#2F809B
Closest named color: Cerulean (#457B9D). oklch(56.3% 0.087 223.9), rgb(47, 128, 155).
Aa
Black text reads best on this color (4.68:1).
About this color
#2F809B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.087 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.022 away. Black text reads best on it, at 4.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.68:1 |
| White text | 4.48:1 |
Values
| HEX | #2F809B |
| RGB | rgb(47, 128, 155) |
| HSL | hsl(195, 53%, 40%) |
| OKLCH | oklch(56.3% 0.087 223.9) |
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 #2F809B | 4.48:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #2F809B | 4.68:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #2F809B text on white | 4.48:1 | AA large text | Lc 70.9 | Content text, not long reading |
| #2F809B text on black | 4.68:1 | AA | Lc -30.8 | Non-text elements, placeholder text |
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
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CBDDE4
oklch(88.6% 0.022 223)
-
Step 300
300
#A6C7D4
oklch(81% 0.04 223.7)
-
Step 400
400
#75AABE
oklch(70.8% 0.063 223.6)
-
Step 500
500
#4E94AD
oklch(63.1% 0.08 223.6)
-
Step 600
600 (this color)
#2F809B
oklch(56.3% 0.087 223.9)
-
Step 700
700
#1E6A83
oklch(49.1% 0.081 224.6)
-
Step 800
800
#1C576A
oklch(42.8% 0.067 223.2)
-
Step 900
900
#1E4856
oklch(37.8% 0.052 222.7)
-
Step 950
950
#132A32
oklch(27% 0.033 222.8)
#2F809B 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) | #717D9C | 0.069 |
| Deuteranopia (no green cones) | #62729B | 0.061 |
| Tritanopia (no blue cones) | #008889 | 0.046 |
| Achromatopsia (no color) | #777777 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F809B
#2F809B
oklch(56.3% 0.087 223.9)
- #A0644A
#A0644A
oklch(56.3% 0.087 44)
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 #2F809B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.022
- Teal Blue #01889F ΔE 0.025
- Ocean #017B92 ΔE 0.029
- Stormy Blue #507B9C ΔE 0.031
- Dull Blue #49759C ΔE 0.037
- Blue NCS #118AB2 ΔE 0.039
- Metallic Blue #4F738E ΔE 0.043
- Sea Blue #047495 ΔE 0.043
Use #2F809B 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.