#2F819E
Closest named color: Cerulean (#457B9D). oklch(56.6% 0.089 225.3), rgb(47, 129, 158).
Aa
Black text reads best on this color (4.75:1).
About this color
#2F819E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.089 and its hue 225°. 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 4.75:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #2F819E |
| RGB | rgb(47, 129, 158) |
| HSL | hsl(196, 54%, 40%) |
| OKLCH | oklch(56.6% 0.089 225.3) |
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 #2F819E | 4.41:1 | AA large text | Lc -75.8 | Fine for body text |
| Black text on #2F819E | 4.75:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #2F819E text on white | 4.41:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #2F819E text on black | 4.75:1 | AA | Lc -31.3 | 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
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADDE4
oklch(88.5% 0.023 221.8)
-
Step 300
300
#A6C7D4
oklch(81% 0.04 223.7)
-
Step 400
400
#74A9BF
oklch(70.6% 0.064 225.9)
-
Step 500
500
#4D94AF
oklch(63.1% 0.082 225.2)
-
Step 600
600 (this color)
#2F819E
oklch(56.6% 0.089 225.3)
-
Step 700
700
#1C6A84
oklch(49.1% 0.083 225.2)
-
Step 800
800
#1B576B
oklch(42.8% 0.068 224.2)
-
Step 900
900
#1D4757
oklch(37.6% 0.054 226)
-
Step 950
950
#122A33
oklch(27% 0.034 224.8)
#2F819E 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) | #717E9F | 0.068 |
| Deuteranopia (no green cones) | #62739E | 0.061 |
| Tritanopia (no blue cones) | #008A8A | 0.051 |
| Achromatopsia (no color) | #787878 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F819E
#2F819E
oklch(56.6% 0.089 225.3)
- #A26549
#A26549
oklch(56.7% 0.089 45.2)
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 #2F819E, 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 0.024
- Stormy Blue #507B9C ΔE 0.031
- Ocean #017B92 ΔE 0.033
- Blue NCS #118AB2 ΔE 0.035
- Dull Blue #49759C ΔE 0.038
- Steel Blue #4682B4 ΔE 0.041
- Nice Blue #107AB0 ΔE 0.042
Use #2F819E 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.