#368CBC
Closest named color: Cool Blue (#4984B8). oklch(61% 0.109 237.1), rgb(54, 140, 188).
Aa
Black text reads best on this color (5.63:1).
About this color
#368CBC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.109 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.024 away. Black text reads best on it, at 5.63:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.63:1 |
| White text | 3.72:1 |
Values
| HEX | #368CBC |
| RGB | rgb(54, 140, 188) |
| HSL | hsl(201, 55%, 47%) |
| OKLCH | oklch(61% 0.109 237.1) |
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 #368CBC | 3.72:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #368CBC | 5.63:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #368CBC text on white | 3.72:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #368CBC text on black | 5.63:1 | AA | Lc -37.1 | 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
#C8DDEB
oklch(88.6% 0.03 236.9)
-
Step 300
300
#A1C6DF
oklch(80.8% 0.053 237.9)
-
Step 400
400
#6BA9CF
oklch(70.7% 0.085 236.6)
-
Step 500
500 (this color)
#368CBC
oklch(61% 0.109 237.1)
-
Step 600
600
#0C7CAF
oklch(55.6% 0.118 236.8)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800
#05557A
oklch(42.6% 0.091 237.1)
-
Step 900
900
#134762
oklch(37.8% 0.07 236.1)
-
Step 950
950
#0E293A
oklch(26.9% 0.046 239.3)
#368CBC 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) | #758CBE | 0.063 |
| Deuteranopia (no green cones) | #637FBB | 0.051 |
| Tritanopia (no blue cones) | #00989C | 0.072 |
| Achromatopsia (no color) | #848484 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #368CBC
#368CBC
oklch(61% 0.109 237.1)
- #B4713C
#B4713C
oklch(61% 0.109 57.1)
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 #368CBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.024
- Blue NCS #118AB2 ΔE 0.025
- Steel Blue #4682B4 ΔE 0.028
- Off Blue #5684AE ΔE 0.034
- Dusty Blue #5A86AD ΔE 0.036
- Water Blue #0E87CC ΔE 0.036
- Faded Blue #658CBB ΔE 0.043
- Teal Blue #01889F ΔE 0.052
Use #368CBC 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.