#048FDB
Closest named color: Water Blue (#0E87CC). oklch(62.5% 0.151 243.4), rgb(4, 143, 219).
Aa
Black text reads best on this color (5.95:1).
About this color
#048FDB is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.151 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.029 away. Black text reads best on it, at 5.95:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.95:1 |
| White text | 3.52:1 |
Values
| HEX | #048FDB |
| RGB | rgb(4, 143, 219) |
| HSL | hsl(201, 96%, 44%) |
| OKLCH | oklch(62.5% 0.151 243.4) |
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 #048FDB | 3.52:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #048FDB | 5.95:1 | AA | Lc 41.9 | Non-text elements, placeholder text |
| #048FDB text on white | 3.52:1 | AA large text | Lc 62.2 | Content text, not long reading |
| #048FDB text on black | 5.95:1 | AA | Lc -39.5 | 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
#DEECF7
oklch(93.6% 0.021 241.4)
-
Step 200
200
#C3DDF3
oklch(88.5% 0.041 243.7)
-
Step 300
300
#97C7ED
oklch(80.9% 0.074 242.6)
-
Step 400
400
#58A8E5
oklch(70.6% 0.119 243.7)
-
Step 500
500 (this color)
#048FDB
oklch(62.5% 0.151 243.4)
-
Step 600
600
#007ABC
oklch(55.7% 0.136 243.3)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800
#005383
oklch(42.6% 0.105 243.8)
-
Step 900
900
#00456E
oklch(37.6% 0.092 243.7)
-
Step 950
950
#032942
oklch(27% 0.062 243.1)
#048FDB 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) | #6A92DE | 0.066 |
| Deuteranopia (no green cones) | #4E81DA | 0.048 |
| Tritanopia (no blue cones) | #00A2AB | 0.103 |
| Achromatopsia (no color) | #888888 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #048FDB
#048FDB
oklch(62.5% 0.151 243.4)
- #C27100
#C27100
oklch(62.5% 0.142 63.2)
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 #048FDB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.029
- Dark Sky Blue #448EE4 ΔE 0.032
- Chefchaouen Blue #4895EF ΔE 0.048
- Dodger Blue #1E90FF ΔE 0.055
- Cool Blue #4984B8 ΔE 0.059
- Blue NCS #118AB2 ΔE 0.062
- Steel Blue #4682B4 ΔE 0.064
- Soft Blue #6488EA ΔE 0.065
Use #048FDB 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.