#2B8CCC
Closest named color: Water Blue (#0E87CC). oklch(61.5% 0.13 242.8), rgb(43, 140, 204).
Aa
Black text reads best on this color (5.72:1).
About this color
#2B8CCC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.130 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.019 away. Black text reads best on it, at 5.72:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.72:1 |
| White text | 3.66:1 |
Values
| HEX | #2B8CCC |
| RGB | rgb(43, 140, 204) |
| HSL | hsl(204, 65%, 48%) |
| OKLCH | oklch(61.5% 0.13 242.8) |
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 #2B8CCC | 3.66:1 | AA large text | Lc -69.3 | Content text, not long reading |
| Black text on #2B8CCC | 5.72:1 | AA | Lc 40.2 | Non-text elements, placeholder text |
| #2B8CCC text on white | 3.66:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #2B8CCC text on black | 5.72:1 | AA | Lc -37.8 | 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 500.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C6DDEF
oklch(88.6% 0.035 241.5)
-
Step 300
300
#9DC6E7
oklch(80.8% 0.064 242.9)
-
Step 400
400
#64A8DB
oklch(70.7% 0.102 242.5)
-
Step 500
500 (this color)
#2B8CCC
oklch(61.5% 0.13 242.8)
-
Step 600
600
#007ABA
oklch(55.6% 0.133 242.5)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#005482
oklch(42.8% 0.102 242.4)
-
Step 900
900
#0A466B
oklch(37.8% 0.085 242.6)
-
Step 950
950
#0A293E
oklch(27% 0.053 242.3)
#2B8CCC 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) | #6E8ECF | 0.061 |
| Deuteranopia (no green cones) | #587FCB | 0.046 |
| Tritanopia (no blue cones) | #009CA3 | 0.090 |
| Achromatopsia (no color) | #858585 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B8CCC
#2B8CCC
oklch(61.5% 0.13 242.8)
- #BB701D
#BB701D
oklch(61.5% 0.131 62.2)
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 #2B8CCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.019
- Cool Blue #4984B8 ΔE 0.036
- Steel Blue #4682B4 ΔE 0.041
- Dark Sky Blue #448EE4 ΔE 0.042
- Blue NCS #118AB2 ΔE 0.043
- Off Blue #5684AE ΔE 0.052
- Faded Blue #658CBB ΔE 0.053
- Dusty Blue #5A86AD ΔE 0.055
Use #2B8CCC 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.