#018BF2
Closest named color: Dodger Blue (#1E90FF). oklch(63% 0.183 250.9), rgb(1, 139, 242).
Aa
Black text reads best on this color (5.97:1).
About this color
#018BF2 is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.183 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.024 away. Black text reads best on it, at 5.97:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 5.97:1 |
| White text | 3.51:1 |
Values
| HEX | #018BF2 |
| RGB | rgb(1, 139, 242) |
| HSL | hsl(206, 99%, 48%) |
| OKLCH | oklch(63% 0.183 250.9) |
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 #018BF2 | 3.51:1 | AA large text | Lc -67.4 | Content text, not long reading |
| Black text on #018BF2 | 5.97:1 | AA | Lc 42.1 | Non-text elements, placeholder text |
| #018BF2 text on white | 3.51:1 | AA large text | Lc 61.9 | Content text, not long reading |
| #018BF2 text on black | 5.97:1 | AA | Lc -39.8 | Non-text elements, placeholder text |
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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEECFB
oklch(93.7% 0.025 250)
-
Step 200
200
#C2DCFA
oklch(88.5% 0.05 252.1)
-
Step 300
300
#95C5F9
oklch(80.9% 0.09 251)
-
Step 400
400
#55A5F6
oklch(70.7% 0.143 250.8)
-
Step 500
500 (this color)
#018BF2
oklch(63% 0.183 250.9)
-
Step 600
600
#0075CD
oklch(55.6% 0.161 250.9)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#004379
oklch(37.8% 0.109 250.7)
-
Step 950
950
#022749
oklch(26.9% 0.075 250.8)
#018BF2 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) | #5593F6 | 0.051 |
| Deuteranopia (no green cones) | #2780F0 | 0.028 |
| Tritanopia (no blue cones) | #00A4B3 | 0.132 |
| Achromatopsia (no color) | #898989 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #018BF2
#018BF2
oklch(63% 0.183 250.9)
- #BC7900
#BC7900
oklch(63.1% 0.136 71.1)
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 #018BF2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.024
- Dark Sky Blue #448EE4 ΔE 0.036
- Chefchaouen Blue #4895EF ΔE 0.045
- Clear Blue #247AFD ΔE 0.048
- Water Blue #0E87CC ΔE 0.057
- Soft Blue #6488EA ΔE 0.058
- Cornflower Blue #6495ED ΔE 0.067
- Cerulean Blue #056EEE ΔE 0.075
Use #018BF2 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.