#0098DB
Closest named color: Dark Sky Blue (#448EE4). oklch(64.6% 0.144 238.5), rgb(0, 152, 219).
Aa
Black text reads best on this color (6.51:1).
About this color
#0098DB is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.144 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.040 away. Black text reads best on it, at 6.51:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.51:1 |
| White text | 3.22:1 |
Values
| HEX | #0098DB |
| RGB | rgb(0, 152, 219) |
| HSL | hsl(198, 100%, 43%) |
| OKLCH | oklch(64.6% 0.144 238.5) |
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 #0098DB | 3.22:1 | AA large text | Lc -64.2 | Content text, not long reading |
| Black text on #0098DB | 6.51:1 | AA | Lc 45.3 | Large or bold text, headings |
| #0098DB text on white | 3.22:1 | AA large text | Lc 58.8 | Large or bold text, headings |
| #0098DB text on black | 6.51:1 | AA | Lc -42.9 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C2DDF1
oklch(88.4% 0.04 240)
-
Step 300
300
#96C8EA
oklch(81% 0.071 238.5)
-
Step 400
400
#55AADF
oklch(70.7% 0.113 238.6)
-
Step 500
500 (this color)
#0098DB
oklch(64.6% 0.144 238.5)
-
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
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#004769
oklch(37.8% 0.084 238.3)
-
Step 950
950
#012A40
oklch(27.1% 0.059 238.3)
#0098DB 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) | #7799DE | 0.076 |
| Deuteranopia (no green cones) | #5D88DA | 0.060 |
| Tritanopia (no blue cones) | #00A9B0 | 0.092 |
| Achromatopsia (no color) | #8F8F8F | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0098DB
#0098DB
oklch(64.6% 0.144 238.5)
- #CD741C
#CD741C
oklch(64.5% 0.144 58.4)
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 #0098DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.040
- Chefchaouen Blue #4895EF ΔE 0.045
- Water Blue #0E87CC ΔE 0.049
- Dodger Blue #1E90FF ΔE 0.063
- Cornflower Blue #6495ED ΔE 0.063
- Blue NCS #118AB2 ΔE 0.067
- Cool Blue #4984B8 ΔE 0.068
- Faded Blue #658CBB ΔE 0.069
Use #0098DB 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.