#3387B6
Closest named color: Steel Blue (#4682B4). oklch(59.4% 0.107 237.2), rgb(51, 135, 182).
Aa
Black text reads best on this color (5.28:1).
About this color
#3387B6 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.107 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.018 away. Black text reads best on it, at 5.28:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 5.28:1 |
| White text | 3.97:1 |
Values
| HEX | #3387B6 |
| RGB | rgb(51, 135, 182) |
| HSL | hsl(202, 56%, 46%) |
| OKLCH | oklch(59.4% 0.107 237.2) |
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 #3387B6 | 3.97:1 | AA large text | Lc -72.3 | Content text, not long reading |
| Black text on #3387B6 | 5.28:1 | AA | Lc 37.3 | Non-text elements, placeholder text |
| #3387B6 text on white | 3.97:1 | AA large text | Lc 66.8 | Content text, not long reading |
| #3387B6 text on black | 5.28:1 | AA | Lc -34.9 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C8DDEA
oklch(88.6% 0.029 234.9)
-
Step 300
300
#A1C6DF
oklch(80.8% 0.053 237.9)
-
Step 400
400
#6CA9CF
oklch(70.8% 0.084 237)
-
Step 500
500 (this color)
#3387B6
oklch(59.4% 0.107 237.2)
-
Step 600
600
#137CAF
oklch(55.6% 0.117 237.4)
-
Step 700
700
#006896
oklch(49.1% 0.108 237.6)
-
Step 800
800
#09557A
oklch(42.7% 0.09 237.6)
-
Step 900
900
#154762
oklch(37.8% 0.069 236.7)
-
Step 950
950
#0E2939
oklch(26.8% 0.044 237.6)
#3387B6 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) | #7187B8 | 0.062 |
| Deuteranopia (no green cones) | #5F7AB5 | 0.051 |
| Tritanopia (no blue cones) | #009397 | 0.071 |
| Achromatopsia (no color) | #808080 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3387B6
#3387B6
oklch(59.4% 0.107 237.2)
- #AE6D39
#AE6D39
oklch(59.5% 0.107 57.3)
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 #3387B6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.018
- Blue NCS #118AB2 ΔE 0.018
- Cool Blue #4984B8 ΔE 0.019
- Off Blue #5684AE ΔE 0.030
- Dusty Blue #5A86AD ΔE 0.035
- Water Blue #0E87CC ΔE 0.036
- Teal Blue #01889F ΔE 0.044
- Nice Blue #107AB0 ΔE 0.044
Use #3387B6 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.