#1BA4EF
Closest named color: Chefchaouen Blue (#4895EF). oklch(68.7% 0.153 240.7), rgb(27, 164, 239).
Aa
Black text reads best on this color (7.60:1).
About this color
#1BA4EF is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.153 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.043 away. Black text reads best on it, at 7.60:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.60:1 |
| White text | 2.76:1 |
Values
| HEX | #1BA4EF |
| RGB | rgb(27, 164, 239) |
| HSL | hsl(201, 87%, 52%) |
| OKLCH | oklch(68.7% 0.153 240.7) |
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 #1BA4EF | 2.76:1 | Fails | Lc -58.0 | Large or bold text, headings |
| Black text on #1BA4EF | 7.60:1 | AAA | Lc 51.3 | Large or bold text, headings |
| #1BA4EF text on white | 2.76:1 | Fails | Lc 52.8 | Large or bold text, headings |
| #1BA4EF text on black | 7.60:1 | AAA | Lc -49.1 | 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
#EEF7FD
oklch(97.1% 0.013 236.6)
-
Step 100
100
#DAEDFB
oklch(93.6% 0.028 239.7)
-
Step 200
200
#BBDEF9
oklch(88.4% 0.053 241.4)
-
Step 300
300
#87C9F9
oklch(80.9% 0.096 241)
-
Step 400
400 (this color)
#1BA4EF
oklch(68.7% 0.153 240.7)
-
Step 500
500
#0092D9
oklch(63.1% 0.147 241)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679B
oklch(49.1% 0.115 241)
-
Step 800
800
#005480
oklch(42.6% 0.1 241.3)
-
Step 900
900
#00466B
oklch(37.7% 0.087 240.8)
-
Step 950
950
#002942
oklch(26.9% 0.063 241.6)
#1BA4EF 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) | #80A6F2 | 0.076 |
| Deuteranopia (no green cones) | #6493EE | 0.059 |
| Tritanopia (no blue cones) | #00B7BF | 0.102 |
| Achromatopsia (no color) | #9C9C9C | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BA4EF
#1BA4EF
oklch(68.7% 0.153 240.7)
- #DD8019
#DD8019
oklch(68.7% 0.153 60.6)
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 #1BA4EF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.043
- Cornflower Blue #6495ED ΔE 0.055
- Dark Sky Blue #448EE4 ΔE 0.058
- Dodger Blue #1E90FF ΔE 0.063
- Deep Sky Blue #00BFFF ΔE 0.073
- Soft Blue #6488EA ΔE 0.080
- Turquoise Blue #06B1C4 ΔE 0.083
- Water Blue #0E87CC ΔE 0.089
Use #1BA4EF 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.