#009DF0
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.9% 0.163 243.3), rgb(0, 157, 240).
Aa
Black text reads best on this color (7.08:1).
About this color
#009DF0 is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.163 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.031 away. Black text reads best on it, at 7.08:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.08:1 |
| White text | 2.96:1 |
Values
| HEX | #009DF0 |
| RGB | rgb(0, 157, 240) |
| HSL | hsl(201, 100%, 47%) |
| OKLCH | oklch(66.9% 0.163 243.3) |
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 #009DF0 | 2.96:1 | Fails | Lc -60.8 | Content text, not long reading |
| Black text on #009DF0 | 7.08:1 | AAA | Lc 48.6 | Large or bold text, headings |
| #009DF0 text on white | 2.96:1 | Fails | Lc 55.5 | Large or bold text, headings |
| #009DF0 text on black | 7.08:1 | AAA | Lc -46.3 | 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
#EEF7FE
oklch(97.1% 0.013 241)
-
Step 100
100
#DAEDFD
oklch(93.7% 0.03 243.4)
-
Step 200
200
#BADEFC
oklch(88.4% 0.056 243.6)
-
Step 300
300
#85C8FD
oklch(80.8% 0.102 243.3)
-
Step 400
400 (this color)
#009DF0
oklch(66.9% 0.163 243.3)
-
Step 500
500
#0091DE
oklch(63.1% 0.153 243.2)
-
Step 600
600
#007ABB
oklch(55.7% 0.134 242.9)
-
Step 700
700
#00669E
oklch(49% 0.119 243.2)
-
Step 800
800
#005483
oklch(42.8% 0.104 243)
-
Step 900
900
#00456E
oklch(37.6% 0.092 243.7)
-
Step 950
950
#002944
oklch(27% 0.066 243.6)
#009DF0 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) | #75A0F3 | 0.071 |
| Deuteranopia (no green cones) | #558DEE | 0.052 |
| Tritanopia (no blue cones) | #00B2BB | 0.112 |
| Achromatopsia (no color) | #969696 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #009DF0
#009DF0
oklch(66.9% 0.163 243.3)
- #D57D00
#D57D00
oklch(67.1% 0.152 63.4)
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 #009DF0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.031
- Dark Sky Blue #448EE4 ΔE 0.043
- Dodger Blue #1E90FF ΔE 0.044
- Cornflower Blue #6495ED ΔE 0.052
- Soft Blue #6488EA ΔE 0.069
- Water Blue #0E87CC ΔE 0.074
- Faded Blue #658CBB ΔE 0.091
- Deep Sky Blue #00BFFF ΔE 0.092
Use #009DF0 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.