#2B9CDC
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.1% 0.136 239.4), rgb(43, 156, 220).
Aa
Black text reads best on this color (6.89:1).
About this color
#2B9CDC is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.136 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.042 away. Black text reads best on it, at 6.89:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.89:1 |
| White text | 3.04:1 |
Values
| HEX | #2B9CDC |
| RGB | rgb(43, 156, 220) |
| HSL | hsl(202, 72%, 52%) |
| OKLCH | oklch(66.1% 0.136 239.4) |
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 #2B9CDC | 3.04:1 | AA large text | Lc -62.2 | Content text, not long reading |
| Black text on #2B9CDC | 6.89:1 | AA | Lc 47.2 | Large or bold text, headings |
| #2B9CDC text on white | 3.04:1 | AA large text | Lc 56.9 | Large or bold text, headings |
| #2B9CDC text on black | 6.89:1 | AA | Lc -44.9 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C4DDEF
oklch(88.5% 0.036 239.2)
-
Step 300
300
#9AC7E7
oklch(80.9% 0.066 239.6)
-
Step 400
400
#5DA9DC
oklch(70.6% 0.106 240)
-
Step 500
500 (this color)
#2B9CDC
oklch(66.1% 0.136 239.4)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006899
oklch(49.2% 0.111 239.3)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#00466A
oklch(37.6% 0.086 240.1)
-
Step 950
950
#052A3F
oklch(27.2% 0.056 239)
#2B9CDC 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) | #7E9DDF | 0.072 |
| Deuteranopia (no green cones) | #668CDB | 0.058 |
| Tritanopia (no blue cones) | #00ACB2 | 0.090 |
| Achromatopsia (no color) | #949494 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B9CDC
#2B9CDC
oklch(66.1% 0.136 239.4)
- #CE7B2E
#CE7B2E
oklch(66% 0.136 59.1)
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 #2B9CDC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.042
- Dark Sky Blue #448EE4 ΔE 0.044
- Cornflower Blue #6495ED ΔE 0.055
- Water Blue #0E87CC ΔE 0.063
- Faded Blue #658CBB ΔE 0.066
- Dodger Blue #1E90FF ΔE 0.067
- Soft Blue #6488EA ΔE 0.072
- Cool Blue #4984B8 ΔE 0.075
Use #2B9CDC 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.