#0388B2
Closest named color: Blue NCS (#118AB2). oklch(58.6% 0.115 228.9), rgb(3, 136, 178).
Aa
Black text reads best on this color (5.16:1).
About this color
#0388B2 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.115 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.007 away. Black text reads best on it, at 5.16:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.16:1 |
| White text | 4.06:1 |
Values
| HEX | #0388B2 |
| RGB | rgb(3, 136, 178) |
| HSL | hsl(194, 97%, 35%) |
| OKLCH | oklch(58.6% 0.115 228.9) |
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 #0388B2 | 4.06:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #0388B2 | 5.16:1 | AA | Lc 36.8 | Non-text elements, placeholder text |
| #0388B2 text on white | 4.06:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #0388B2 text on black | 5.16:1 | AA | Lc -34.4 | 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 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
#9FC8DC
oklch(81% 0.052 229.2)
-
Step 400
400
#67ABCA
oklch(70.8% 0.083 229)
-
Step 500
500
#3495BC
oklch(63.1% 0.106 228.9)
-
Step 600
600 (this color)
#0388B2
oklch(58.6% 0.115 228.9)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#0B485F
oklch(37.7% 0.069 229.5)
-
Step 950
950
#0B2A37
oklch(26.9% 0.043 229.3)
#0388B2 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) | #7286B4 | 0.080 |
| Deuteranopia (no green cones) | #5E78B1 | 0.068 |
| Tritanopia (no blue cones) | #009496 | 0.064 |
| Achromatopsia (no color) | #7E7E7E | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0388B2
#0388B2
oklch(58.6% 0.115 228.9)
- #B26539
#B26539
oklch(58.6% 0.115 48.9)
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 #0388B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.007
- Teal Blue #01889F ΔE 0.030
- Steel Blue #4682B4 ΔE 0.035
- Cool Blue #4984B8 ΔE 0.038
- Nice Blue #107AB0 ΔE 0.040
- Water Blue #0E87CC ΔE 0.042
- Off Blue #5684AE ΔE 0.046
- Cerulean #457B9D ΔE 0.048
Use #0388B2 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.