#2A879B
Closest named color: Teal Blue (#01889F). oklch(57.9% 0.089 215.3), rgb(42, 135, 155).
Aa
Black text reads best on this color (5.03:1).
About this color
#2A879B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.089 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.013 away. Black text reads best on it, at 5.03:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 5.03:1 |
| White text | 4.16:1 |
Values
| HEX | #2A879B |
| RGB | rgb(42, 135, 155) |
| HSL | hsl(191, 57%, 39%) |
| OKLCH | oklch(57.9% 0.089 215.3) |
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 #2A879B | 4.16:1 | AA large text | Lc -73.9 | Content text, not long reading |
| Black text on #2A879B | 5.03:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #2A879B text on white | 4.16:1 | AA large text | Lc 68.4 | Content text, not long reading |
| #2A879B text on black | 5.03:1 | AA | Lc -33.3 | 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
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A4C8D1
oklch(81% 0.04 214.6)
-
Step 400
400
#71ABBA
oklch(70.7% 0.064 215.8)
-
Step 500
500
#4796A9
oklch(63.1% 0.082 215.8)
-
Step 600
600 (this color)
#2A879B
oklch(57.9% 0.089 215.3)
-
Step 700
700
#0F6C7E
oklch(49% 0.083 215.3)
-
Step 800
800
#135867
oklch(42.7% 0.069 216.2)
-
Step 900
900
#194953
oklch(37.8% 0.053 213.9)
-
Step 950
950
#102B31
oklch(27.1% 0.034 214.3)
#2A879B 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) | #79839C | 0.079 |
| Deuteranopia (no green cones) | #69779B | 0.071 |
| Tritanopia (no blue cones) | #008E8D | 0.037 |
| Achromatopsia (no color) | #7C7C7C | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A879B
#2A879B
oklch(57.9% 0.089 215.3)
- #A86655
#A86655
oklch(57.9% 0.09 35.2)
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 #2A879B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.013
- Blue NCS #118AB2 ΔE 0.035
- Dark Cyan #008B8B ΔE 0.035
- Cerulean #457B9D ΔE 0.039
- Teal Green #0A9396 ΔE 0.040
- Ocean #017B92 ΔE 0.042
- Stormy Blue #507B9C ΔE 0.044
- Teal #008080 ΔE 0.048
Use #2A879B 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.