#148CCB
Closest named color: Water Blue (#0E87CC). oklch(61% 0.135 239.9), rgb(20, 140, 203).
Aa
Black text reads best on this color (5.64:1).
About this color
#148CCB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.135 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.015 away. Black text reads best on it, at 5.64:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.64:1 |
| White text | 3.72:1 |
Values
| HEX | #148CCB |
| RGB | rgb(20, 140, 203) |
| HSL | hsl(201, 82%, 44%) |
| OKLCH | oklch(61% 0.135 239.9) |
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 #148CCB | 3.72:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #148CCB | 5.64:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #148CCB text on white | 3.72:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #148CCB text on black | 5.64:1 | AA | Lc -37.4 | 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
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C4DDEF
oklch(88.5% 0.036 239.2)
-
Step 300
300
#9AC7E7
oklch(80.9% 0.066 239.6)
-
Step 400
400
#5EA9DB
oklch(70.6% 0.105 239.7)
-
Step 500
500 (this color)
#148CCB
oklch(61% 0.135 239.9)
-
Step 600
600
#007BB5
oklch(55.6% 0.127 239.8)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557E
oklch(42.8% 0.097 239.2)
-
Step 900
900
#00466A
oklch(37.6% 0.086 240.1)
-
Step 950
950
#06293F
oklch(26.9% 0.056 241.4)
#148CCB 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) | #6E8DCE | 0.069 |
| Deuteranopia (no green cones) | #567DCA | 0.054 |
| Tritanopia (no blue cones) | #009CA2 | 0.089 |
| Achromatopsia (no color) | #848484 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #148CCB
#148CCB
oklch(61% 0.135 239.9)
- #BD6D19
#BD6D19
oklch(61.2% 0.135 60)
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 #148CCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.015
- Blue NCS #118AB2 ΔE 0.039
- Cool Blue #4984B8 ΔE 0.039
- Steel Blue #4682B4 ΔE 0.043
- Dark Sky Blue #448EE4 ΔE 0.048
- Windows Blue #3778BF ΔE 0.055
- Off Blue #5684AE ΔE 0.056
- Dusty Blue #5A86AD ΔE 0.059
Use #148CCB 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.