#3988A0
Closest named color: Teal Blue (#01889F). oklch(58.8% 0.084 221.1), rgb(57, 136, 160).
Aa
Black text reads best on this color (5.20:1).
About this color
#3988A0 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.084 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.023 away. Black text reads best on it, at 5.20:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 5.20:1 |
| White text | 4.03:1 |
Values
| HEX | #3988A0 |
| RGB | rgb(57, 136, 160) |
| HSL | hsl(194, 47%, 43%) |
| OKLCH | oklch(58.8% 0.084 221.1) |
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 #3988A0 | 4.03:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #3988A0 | 5.20:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #3988A0 text on white | 4.03:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #3988A0 text on black | 5.20:1 | AA | Lc -34.3 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CBDDE3
oklch(88.6% 0.021 219.7)
-
Step 300
300
#A7C7D2
oklch(81% 0.038 220.6)
-
Step 400
400
#76AABB
oklch(70.8% 0.06 220.3)
-
Step 500
500
#4F94AB
oklch(63% 0.078 222)
-
Step 600
600 (this color)
#3988A0
oklch(58.8% 0.084 221.1)
-
Step 700
700
#1F6B80
oklch(49.2% 0.079 220.4)
-
Step 800
800
#1D5768
oklch(42.7% 0.065 220.9)
-
Step 900
900
#1F4855
oklch(37.8% 0.051 221.4)
-
Step 950
950
#132A32
oklch(27% 0.033 222.8)
#3988A0 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) | #7A85A1 | 0.070 |
| Deuteranopia (no green cones) | #6B7AA0 | 0.062 |
| Tritanopia (no blue cones) | #009090 | 0.045 |
| Achromatopsia (no color) | #7E7E7E | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3988A0
#3988A0
oklch(58.8% 0.084 221.1)
- #A86B55
#A86B55
oklch(58.8% 0.085 40.6)
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 #3988A0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.023
- Blue NCS #118AB2 ΔE 0.030
- Cerulean #457B9D ΔE 0.037
- Off Blue #5684AE ΔE 0.039
- Dusty Blue #5A86AD ΔE 0.039
- Stormy Blue #507B9C ΔE 0.039
- Steel Blue #4682B4 ΔE 0.042
- Teal Green #0A9396 ΔE 0.044
Use #3988A0 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.