#3D8BB5
Closest named color: Cool Blue (#4984B8). oklch(60.6% 0.099 235.3), rgb(61, 139, 181).
Aa
Black text reads best on this color (5.55:1).
About this color
#3D8BB5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.099 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.023 away. Black text reads best on it, at 5.55:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.55:1 |
| White text | 3.77:1 |
Values
| HEX | #3D8BB5 |
| RGB | rgb(61, 139, 181) |
| HSL | hsl(201, 50%, 47%) |
| OKLCH | oklch(60.6% 0.099 235.3) |
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 #3D8BB5 | 3.77:1 | AA large text | Lc -70.6 | Content text, not long reading |
| Black text on #3D8BB5 | 5.55:1 | AA | Lc 39.0 | Non-text elements, placeholder text |
| #3D8BB5 text on white | 3.77:1 | AA large text | Lc 65.1 | Content text, not long reading |
| #3D8BB5 text on black | 5.55:1 | AA | Lc -36.6 | 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
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A3C6DC
oklch(80.8% 0.049 235.8)
-
Step 400
400
#6FA9CA
oklch(70.7% 0.077 234.4)
-
Step 500
500 (this color)
#3D8BB5
oklch(60.6% 0.099 235.3)
-
Step 600
600
#1F7CA9
oklch(55.5% 0.108 235.4)
-
Step 700
700
#0E6991
oklch(49.2% 0.1 234.8)
-
Step 800
800
#125576
oklch(42.6% 0.083 235.9)
-
Step 900
900
#18475F
oklch(37.8% 0.065 234.6)
-
Step 950
950
#102938
oklch(26.9% 0.042 237.4)
#3D8BB5 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) | #778AB7 | 0.061 |
| Deuteranopia (no green cones) | #667EB4 | 0.051 |
| Tritanopia (no blue cones) | #009699 | 0.066 |
| Achromatopsia (no color) | #838383 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D8BB5
#3D8BB5
oklch(60.6% 0.099 235.3)
- #AF7145
#AF7145
oklch(60.5% 0.099 55)
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 #3D8BB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.023
- Blue NCS #118AB2 ΔE 0.023
- Steel Blue #4682B4 ΔE 0.026
- Off Blue #5684AE ΔE 0.027
- Dusty Blue #5A86AD ΔE 0.028
- Faded Blue #658CBB ΔE 0.041
- Water Blue #0E87CC ΔE 0.045
- Teal Blue #01889F ΔE 0.046
Use #3D8BB5 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.