#398CAE
Closest named color: Blue NCS (#118AB2). oklch(60.4% 0.094 228.5), rgb(57, 140, 174).
Aa
Black text reads best on this color (5.53:1).
About this color
#398CAE is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 60%, its chroma 0.094 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.021 away. Black text reads best on it, at 5.53:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.53:1 |
| White text | 3.79:1 |
Values
| HEX | #398CAE |
| RGB | rgb(57, 140, 174) |
| HSL | hsl(197, 51%, 45%) |
| OKLCH | oklch(60.4% 0.094 228.5) |
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 #398CAE | 3.79:1 | AA large text | Lc -70.7 | Content text, not long reading |
| Black text on #398CAE | 5.53:1 | AA | Lc 38.9 | Non-text elements, placeholder text |
| #398CAE text on white | 3.79:1 | AA large text | Lc 65.2 | Content text, not long reading |
| #398CAE text on black | 5.53:1 | AA | Lc -36.5 | 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
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE7
oklch(88.6% 0.025 229.2)
-
Step 300
300
#A2C7D9
oklch(80.9% 0.047 229)
-
Step 400
400
#6EAAC5
oklch(70.7% 0.074 228.2)
-
Step 500
500 (this color)
#398CAE
oklch(60.4% 0.094 228.5)
-
Step 600
600
#187EA3
oklch(55.6% 0.103 228.9)
-
Step 700
700
#036A8B
oklch(49% 0.095 228.5)
-
Step 800
800
#0D5771
oklch(42.8% 0.079 228.1)
-
Step 900
900
#16485B
oklch(37.8% 0.061 227.3)
-
Step 950
950
#0F2A36
oklch(27% 0.04 229.8)
#398CAE 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) | #7A8AB0 | 0.068 |
| Deuteranopia (no green cones) | #6A7EAE | 0.059 |
| Tritanopia (no blue cones) | #009697 | 0.057 |
| Achromatopsia (no color) | #838383 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #398CAE
#398CAE
oklch(60.4% 0.094 228.5)
- #AF6F4D
#AF6F4D
oklch(60.3% 0.095 48.3)
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 #398CAE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.021
- Dusty Blue #5A86AD ΔE 0.032
- Off Blue #5684AE ΔE 0.032
- Cool Blue #4984B8 ΔE 0.033
- Steel Blue #4682B4 ΔE 0.033
- Teal Blue #01889F ΔE 0.036
- Faded Blue #658CBB ΔE 0.048
- Cerulean #457B9D ΔE 0.049
Use #398CAE 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.