#398AA4
Closest named color: Teal Blue (#01889F). oklch(59.5% 0.087 222.4), rgb(57, 138, 164).
Aa
Black text reads best on this color (5.34:1).
About this color
#398AA4 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.087 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.026 away. Black text reads best on it, at 5.34:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 5.34:1 |
| White text | 3.92:1 |
Values
| HEX | #398AA4 |
| RGB | rgb(57, 138, 164) |
| HSL | hsl(195, 48%, 43%) |
| OKLCH | oklch(59.5% 0.087 222.4) |
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 #398AA4 | 3.92:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #398AA4 | 5.34:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #398AA4 text on white | 3.92:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #398AA4 text on black | 5.34:1 | 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 500.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#C9DDE5
oklch(88.5% 0.024 223.7)
-
Step 300
300
#A4C7D5
oklch(80.9% 0.042 224.1)
-
Step 400
400
#70ABBF
oklch(70.8% 0.068 221.4)
-
Step 500
500 (this color)
#398AA4
oklch(59.5% 0.087 222.4)
-
Step 600
600
#1E7F9B
oklch(55.6% 0.094 222.4)
-
Step 700
700
#0C6B85
oklch(49.1% 0.088 223.1)
-
Step 800
800
#11576C
oklch(42.6% 0.073 223.4)
-
Step 900
900
#184857
oklch(37.6% 0.057 222.2)
-
Step 950
950
#102A33
oklch(26.9% 0.036 223.3)
#398AA4 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) | #7B87A5 | 0.070 |
| Deuteranopia (no green cones) | #6C7CA4 | 0.062 |
| Tritanopia (no blue cones) | #009292 | 0.048 |
| Achromatopsia (no color) | #808080 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #398AA4
#398AA4
oklch(59.5% 0.087 222.4)
- #AB6D54
#AB6D54
oklch(59.5% 0.088 42.7)
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 #398AA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.026
- Blue NCS #118AB2 ΔE 0.027
- Dusty Blue #5A86AD ΔE 0.036
- Off Blue #5684AE ΔE 0.037
- Steel Blue #4682B4 ΔE 0.040
- Cerulean #457B9D ΔE 0.042
- Cool Blue #4984B8 ΔE 0.042
- Stormy Blue #507B9C ΔE 0.044
Use #398AA4 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.