#048AB2
Closest named color: Blue NCS (#118AB2). oklch(59.1% 0.114 227.4), rgb(4, 138, 178).
Aa
Black text reads best on this color (5.28:1).
About this color
#048AB2 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.114 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.002 away. Black text reads best on it, at 5.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.28:1 |
| White text | 3.97:1 |
Values
| HEX | #048AB2 |
| RGB | rgb(4, 138, 178) |
| HSL | hsl(194, 96%, 36%) |
| OKLCH | oklch(59.1% 0.114 227.4) |
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 #048AB2 | 3.97:1 | AA large text | Lc -72.0 | Content text, not long reading |
| Black text on #048AB2 | 5.28:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #048AB2 text on white | 3.97:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #048AB2 text on black | 5.28:1 | AA | Lc -35.2 | 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 600.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C7DDE8
oklch(88.5% 0.028 229.2)
-
Step 300
300
#9FC8DB
oklch(81% 0.051 227.9)
-
Step 400
400
#66ABC9
oklch(70.7% 0.082 227.8)
-
Step 500
500
#3396BB
oklch(63.2% 0.105 227.2)
-
Step 600
600 (this color)
#048AB2
oklch(59.1% 0.114 227.4)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#0A485E
oklch(37.6% 0.069 228.1)
-
Step 950
950
#0A2A37
oklch(26.9% 0.044 228.8)
#048AB2 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) | #7587B4 | 0.083 |
| Deuteranopia (no green cones) | #6079B1 | 0.071 |
| Tritanopia (no blue cones) | #009597 | 0.061 |
| Achromatopsia (no color) | #808080 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #048AB2
#048AB2
oklch(59.1% 0.114 227.4)
- #B4663E
#B4663E
oklch(59.1% 0.114 46.8)
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 #048AB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.002
- Teal Blue #01889F ΔE 0.029
- Steel Blue #4682B4 ΔE 0.037
- Cool Blue #4984B8 ΔE 0.039
- Water Blue #0E87CC ΔE 0.044
- Off Blue #5684AE ΔE 0.046
- Nice Blue #107AB0 ΔE 0.046
- Dusty Blue #5A86AD ΔE 0.050
Use #048AB2 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.