#308AAF
Closest named color: Blue NCS (#118AB2). oklch(59.7% 0.1 229.5), rgb(48, 138, 175).
Aa
Black text reads best on this color (5.38:1).
About this color
#308AAF is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 60%, its chroma 0.100 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.013 away. Black text reads best on it, at 5.38:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.38:1 |
| White text | 3.90:1 |
Values
| HEX | #308AAF |
| RGB | rgb(48, 138, 175) |
| HSL | hsl(197, 57%, 44%) |
| OKLCH | oklch(59.7% 0.1 229.5) |
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 #308AAF | 3.90:1 | AA large text | Lc -71.7 | Content text, not long reading |
| Black text on #308AAF | 5.38:1 | AA | Lc 37.9 | Non-text elements, placeholder text |
| #308AAF text on white | 3.90:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #308AAF text on black | 5.38:1 | AA | Lc -35.5 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE8
oklch(88.5% 0.027 230.4)
-
Step 300
300
#A1C7DA
oklch(80.8% 0.049 229.7)
-
Step 400
400
#6BAAC8
oklch(70.7% 0.078 229.8)
-
Step 500
500 (this color)
#308AAF
oklch(59.7% 0.1 229.5)
-
Step 600
600
#067EA6
oklch(55.5% 0.109 229.6)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800
#025774
oklch(42.8% 0.084 229.7)
-
Step 900
900
#12485D
oklch(37.8% 0.065 228.7)
-
Step 950
950
#0D2A37
oklch(27% 0.042 230.5)
#308AAF 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) | #7788B1 | 0.070 |
| Deuteranopia (no green cones) | #667BAE | 0.061 |
| Tritanopia (no blue cones) | #009496 | 0.058 |
| Achromatopsia (no color) | #818181 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #308AAF
#308AAF
oklch(59.7% 0.1 229.5)
- #AF6C47
#AF6C47
oklch(59.6% 0.1 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 #308AAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.013
- Steel Blue #4682B4 ΔE 0.030
- Cool Blue #4984B8 ΔE 0.031
- Teal Blue #01889F ΔE 0.032
- Off Blue #5684AE ΔE 0.033
- Dusty Blue #5A86AD ΔE 0.035
- Cerulean #457B9D ΔE 0.045
- Stormy Blue #507B9C ΔE 0.048
Use #308AAF 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.