#019EDD
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.1% 0.142 235.9), rgb(1, 158, 221).
Aa
Black text reads best on this color (6.93:1).
About this color
#019EDD is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.142 and its hue 236°. 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 6.93:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.93:1 |
| White text | 3.02:1 |
Values
| HEX | #019EDD |
| RGB | rgb(1, 158, 221) |
| HSL | hsl(197, 99%, 44%) |
| OKLCH | oklch(66.1% 0.142 235.9) |
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 #019EDD | 3.02:1 | AA large text | Lc -61.7 | Content text, not long reading |
| Black text on #019EDD | 6.93:1 | AA | Lc 47.7 | Large or bold text, headings |
| #019EDD text on white | 3.02:1 | AA large text | Lc 56.4 | Large or bold text, headings |
| #019EDD text on black | 6.93:1 | AA | Lc -45.4 | 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 500.
-
Step 50
50
#F0F7FB
oklch(97.2% 0.009 232.4)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C2DEF0
oklch(88.6% 0.039 236.1)
-
Step 300
300
#95C8E8
oklch(80.8% 0.07 236.3)
-
Step 400
400
#53ABDC
oklch(70.7% 0.111 235.7)
-
Step 500
500 (this color)
#019EDD
oklch(66.1% 0.142 235.9)
-
Step 600
600
#007CAF
oklch(55.5% 0.12 236.1)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#00567A
oklch(42.8% 0.091 235.4)
-
Step 900
900
#004766
oklch(37.6% 0.081 235.8)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#019EDD 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) | #7F9EE0 | 0.082 |
| Deuteranopia (no green cones) | #658DDC | 0.066 |
| Tritanopia (no blue cones) | #00AEB4 | 0.088 |
| Achromatopsia (no color) | #949494 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #019EDD
#019EDD
oklch(66.1% 0.142 235.9)
- #D3782C
#D3782C
oklch(66.1% 0.142 55.9)
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 #019EDD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.048
- Dark Sky Blue #448EE4 ΔE 0.051
- Cornflower Blue #6495ED ΔE 0.064
- Water Blue #0E87CC ΔE 0.065
- Dodger Blue #1E90FF ΔE 0.070
- Faded Blue #658CBB ΔE 0.074
- Turquoise Blue #06B1C4 ΔE 0.075
- Blue NCS #118AB2 ΔE 0.077
Use #019EDD 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.