#028DDB
Closest named color: Water Blue (#0E87CC). oklch(62% 0.153 244.3), rgb(2, 141, 219).
Aa
Black text reads best on this color (5.83:1).
About this color
#028DDB is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.153 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.026 away. Black text reads best on it, at 5.83:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.83:1 |
| White text | 3.59:1 |
Values
| HEX | #028DDB |
| RGB | rgb(2, 141, 219) |
| HSL | hsl(202, 98%, 43%) |
| OKLCH | oklch(62% 0.153 244.3) |
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 #028DDB | 3.59:1 | AA large text | Lc -68.4 | Content text, not long reading |
| Black text on #028DDB | 5.83:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #028DDB text on white | 3.59:1 | AA large text | Lc 62.9 | Content text, not long reading |
| #028DDB text on black | 5.83:1 | AA | Lc -38.8 | 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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF8
oklch(93.6% 0.022 243.8)
-
Step 200
200
#C3DDF3
oklch(88.5% 0.041 243.7)
-
Step 300
300
#97C7EE
oklch(81% 0.075 243.4)
-
Step 400
400
#59A8E6
oklch(70.7% 0.12 244.4)
-
Step 500
500 (this color)
#028DDB
oklch(62% 0.153 244.3)
-
Step 600
600
#0079BD
oklch(55.5% 0.138 244.2)
-
Step 700
700
#0066A0
oklch(49.2% 0.121 244)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900
#00456F
oklch(37.6% 0.093 244.3)
-
Step 950
950
#032943
oklch(27.1% 0.063 244.1)
#028DDB 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) | #6790DE | 0.064 |
| Deuteranopia (no green cones) | #4A7FDA | 0.046 |
| Tritanopia (no blue cones) | #00A0AA | 0.104 |
| Achromatopsia (no color) | #878787 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #028DDB
#028DDB
oklch(62% 0.153 244.3)
- #BF7100
#BF7100
oklch(62.1% 0.14 64.4)
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 #028DDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.026
- Dark Sky Blue #448EE4 ΔE 0.033
- Chefchaouen Blue #4895EF ΔE 0.051
- Dodger Blue #1E90FF ΔE 0.055
- Cool Blue #4984B8 ΔE 0.058
- Blue NCS #118AB2 ΔE 0.062
- Steel Blue #4682B4 ΔE 0.063
- Windows Blue #3778BF ΔE 0.064
Use #028DDB 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.