#2A7B9C
Closest named color: Cerulean (#457B9D). oklch(54.9% 0.092 229.2), rgb(42, 123, 156).
Aa
White text reads best on this color (4.76:1).
About this color
#2A7B9C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.092 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.022 away. White text reads best on it, at 4.76:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.41:1 |
| White text | 4.76:1 |
Values
| HEX | #2A7B9C |
| RGB | rgb(42, 123, 156) |
| HSL | hsl(197, 58%, 39%) |
| OKLCH | oklch(54.9% 0.092 229.2) |
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 #2A7B9C | 4.76:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #2A7B9C | 4.41:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #2A7B9C text on white | 4.76:1 | AA | Lc 72.7 | Content text, not long reading |
| #2A7B9C text on black | 4.41:1 | AA large text | Lc -28.9 | 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
#CADCE5
oklch(88.4% 0.023 229.1)
-
Step 300
300
#A6C6D6
oklch(80.8% 0.041 229.5)
-
Step 400
400
#75A9C2
oklch(70.7% 0.066 229.5)
-
Step 500
500
#4D93B2
oklch(63% 0.084 229)
-
Step 600
600 (this color)
#2A7B9C
oklch(54.9% 0.092 229.2)
-
Step 700
700
#1E6987
oklch(49% 0.085 229.4)
-
Step 800
800
#1C566E
oklch(42.7% 0.071 229.4)
-
Step 900
900
#1E4759
oklch(37.7% 0.055 229.4)
-
Step 950
950
#132A34
oklch(27.1% 0.034 228.3)
#2A7B9C 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) | #6A799E | 0.065 |
| Deuteranopia (no green cones) | #5A6E9C | 0.055 |
| Tritanopia (no blue cones) | #008486 | 0.053 |
| Achromatopsia (no color) | #737373 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A7B9C
#2A7B9C
oklch(54.9% 0.092 229.2)
- #9C603F
#9C603F
oklch(54.8% 0.091 48.9)
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 #2A7B9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.022
- Ocean #017B92 ΔE 0.023
- Dull Blue #49759C ΔE 0.029
- Sea Blue #047495 ΔE 0.029
- Muted Blue #3B719F ΔE 0.032
- Stormy Blue #507B9C ΔE 0.033
- Nice Blue #107AB0 ΔE 0.034
- Flat Blue #3C73A8 ΔE 0.036
Use #2A7B9C 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.