#2B9BF1
Closest named color: Chefchaouen Blue (#4895EF). oklch(67% 0.16 247.1), rgb(43, 155, 241).
Aa
Black text reads best on this color (7.06:1).
About this color
#2B9BF1 is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.160 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.021 away. Black text reads best on it, at 7.06:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.06:1 |
| White text | 2.97:1 |
Values
| HEX | #2B9BF1 |
| RGB | rgb(43, 155, 241) |
| HSL | hsl(206, 88%, 56%) |
| OKLCH | oklch(67% 0.16 247.1) |
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 #2B9BF1 | 2.97:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #2B9BF1 | 7.06:1 | AAA | Lc 48.2 | Large or bold text, headings |
| #2B9BF1 text on white | 2.97:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #2B9BF1 text on black | 7.06:1 | AAA | Lc -46.0 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF7FE
oklch(97.2% 0.013 244.3)
-
Step 100
100
#DBECFD
oklch(93.6% 0.029 248.1)
-
Step 200
200
#BDDDFD
oklch(88.5% 0.056 248.5)
-
Step 300
300
#8BC7FE
oklch(80.9% 0.1 247)
-
Step 400
400 (this color)
#2B9BF1
oklch(67% 0.16 247.1)
-
Step 500
500
#008EE7
oklch(63% 0.167 247.2)
-
Step 600
600
#0078C3
oklch(55.7% 0.146 246.8)
-
Step 700
700
#0064A5
oklch(49% 0.13 247.2)
-
Step 800
800
#005289
oklch(42.7% 0.113 247.3)
-
Step 900
900
#004473
oklch(37.7% 0.1 247.4)
-
Step 950
950
#002847
oklch(27% 0.072 247.4)
#2B9BF1 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) | #729FF5 | 0.059 |
| Deuteranopia (no green cones) | #558EEF | 0.040 |
| Tritanopia (no blue cones) | #00B0BB | 0.114 |
| Achromatopsia (no color) | #969696 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B9BF1
#2B9BF1
oklch(67% 0.16 247.1)
- #D08000
#D08000
oklch(66.9% 0.148 67.1)
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 #2B9BF1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.021
- Dark Sky Blue #448EE4 ΔE 0.036
- Dodger Blue #1E90FF ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.042
- Soft Blue #6488EA ΔE 0.059
- Water Blue #0E87CC ΔE 0.075
- Faded Blue #658CBB ΔE 0.087
- Clear Blue #247AFD ΔE 0.091
Use #2B9BF1 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.