#1DA5E9
Closest named color: Chefchaouen Blue (#4895EF). oklch(68.6% 0.146 238.1), rgb(29, 165, 233).
Aa
Black text reads best on this color (7.61:1).
About this color
#1DA5E9 is a medium-light, vivid blue. In OKLCH its lightness is 69%, its chroma 0.146 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.048 away. Black text reads best on it, at 7.61:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.61:1 |
| White text | 2.75:1 |
Values
| HEX | #1DA5E9 |
| RGB | rgb(29, 165, 233) |
| HSL | hsl(200, 82%, 51%) |
| OKLCH | oklch(68.6% 0.146 238.1) |
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 #1DA5E9 | 2.75:1 | Fails | Lc -58.0 | Large or bold text, headings |
| Black text on #1DA5E9 | 7.61:1 | AAA | Lc 51.3 | Large or bold text, headings |
| #1DA5E9 text on white | 2.75:1 | Fails | Lc 52.7 | Large or bold text, headings |
| #1DA5E9 text on black | 7.61:1 | 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
#DAEDFA
oklch(93.6% 0.027 237.6)
-
Step 200
200
#BBDFF7
oklch(88.5% 0.05 237.3)
-
Step 300
300
#87CAF5
oklch(81% 0.091 237.6)
-
Step 400
400 (this color)
#1DA5E9
oklch(68.6% 0.146 238.1)
-
Step 500
500
#0093D4
oklch(63% 0.141 238.5)
-
Step 600
600
#007CB3
oklch(55.7% 0.124 238.2)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#00557C
oklch(42.7% 0.094 237.9)
-
Step 900
900
#004768
oklch(37.7% 0.083 237.5)
-
Step 950
950
#002A40
oklch(27% 0.06 237.8)
#1DA5E9 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) | #84A5EC | 0.079 |
| Deuteranopia (no green cones) | #6994E8 | 0.062 |
| Tritanopia (no blue cones) | #00B6BD | 0.093 |
| Achromatopsia (no color) | #9C9C9C | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1DA5E9
#1DA5E9
oklch(68.6% 0.146 238.1)
- #DB802D
#DB802D
oklch(68.5% 0.145 58.1)
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 #1DA5E9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.048
- Cornflower Blue #6495ED ΔE 0.059
- Dark Sky Blue #448EE4 ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.071
- Deep Sky Blue #00BFFF ΔE 0.072
- Turquoise Blue #06B1C4 ΔE 0.073
- Soft Blue #6488EA ΔE 0.085
- Water Blue #0E87CC ΔE 0.089
Use #1DA5E9 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.