#3D8BB1
Closest named color: Blue NCS (#118AB2). oklch(60.4% 0.095 232.6), rgb(61, 139, 177).
Aa
Black text reads best on this color (5.52:1).
About this color
#3D8BB1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.095 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.022 away. Black text reads best on it, at 5.52:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.52:1 |
| White text | 3.79:1 |
Values
| HEX | #3D8BB1 |
| RGB | rgb(61, 139, 177) |
| HSL | hsl(200, 49%, 47%) |
| OKLCH | oklch(60.4% 0.095 232.6) |
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 #3D8BB1 | 3.79:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #3D8BB1 | 5.52:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #3D8BB1 text on white | 3.79:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #3D8BB1 text on black | 5.52:1 | AA | Lc -36.4 | 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 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
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A3C7DA
oklch(81% 0.047 231.1)
-
Step 400
400
#70A9C8
oklch(70.7% 0.075 233.1)
-
Step 500
500 (this color)
#3D8BB1
oklch(60.4% 0.095 232.6)
-
Step 600
600
#207DA6
oklch(55.6% 0.104 232.8)
-
Step 700
700
#0F698E
oklch(49.1% 0.096 232.8)
-
Step 800
800
#135673
oklch(42.7% 0.079 232.3)
-
Step 900
900
#19475D
oklch(37.7% 0.062 232.6)
-
Step 950
950
#102A36
oklch(27.1% 0.039 230.5)
#3D8BB1 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) | #7889B3 | 0.062 |
| Deuteranopia (no green cones) | #687EB0 | 0.053 |
| Tritanopia (no blue cones) | #009598 | 0.061 |
| Achromatopsia (no color) | #838383 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D8BB1
#3D8BB1
oklch(60.4% 0.095 232.6)
- #AE7149
#AE7149
oklch(60.5% 0.095 53.2)
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 #3D8BB1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.022
- Cool Blue #4984B8 ΔE 0.027
- Off Blue #5684AE ΔE 0.027
- Dusty Blue #5A86AD ΔE 0.027
- Steel Blue #4682B4 ΔE 0.028
- Teal Blue #01889F ΔE 0.041
- Faded Blue #658CBB ΔE 0.043
- Cerulean #457B9D ΔE 0.048
Use #3D8BB1 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.