#375CAE
Closest named color: Mid Blue (#276AB3). oklch(49.2% 0.138 263.8), rgb(55, 92, 174).
Aa
White text reads best on this color (6.35:1).
About this color
#375CAE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.138 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.038 away. White text reads best on it, at 6.35:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.30:1 |
| White text | 6.35:1 |
Values
| HEX | #375CAE |
| RGB | rgb(55, 92, 174) |
| HSL | hsl(221, 52%, 45%) |
| OKLCH | oklch(49.2% 0.138 263.8) |
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 #375CAE | 6.35:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #375CAE | 3.30:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #375CAE text on white | 6.35:1 | AA | Lc 81.3 | Fine for body text |
| #375CAE text on black | 3.30:1 | AA large text | Lc -20.6 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDDAF2
oklch(88.6% 0.036 262.8)
-
Step 300
300
#ABC1ED
oklch(80.9% 0.067 264.1)
-
Step 400
400
#7EA0E3
oklch(70.7% 0.106 263.3)
-
Step 500
500
#5E86DB
oklch(63% 0.136 263.9)
-
Step 600
600
#456EC9
oklch(55.5% 0.148 264)
-
Step 700
700 (this color)
#375CAE
oklch(49.2% 0.138 263.8)
-
Step 800
800
#2E4B8D
oklch(42.6% 0.115 264.3)
-
Step 900
900
#293F70
oklch(37.6% 0.089 264.3)
-
Step 950
950
#182542
oklch(26.9% 0.057 264.6)
#375CAE 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) | #3265B1 | 0.024 |
| Deuteranopia (no green cones) | #195AAC | 0.026 |
| Tritanopia (no blue cones) | #006F7C | 0.113 |
| Achromatopsia (no color) | #5F5F5F | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #375CAE
#375CAE
oklch(49.2% 0.138 263.8)
- #7C5B00
#7C5B00
oklch(49.2% 0.101 83.9)
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 #375CAE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.045
- French Blue #436BAD ΔE 0.046
- Dusky Blue #475F94 ΔE 0.047
- Dusk Blue #26538D ΔE 0.061
- Peacock Blue #016795 ΔE 0.062
- Denim #3B638C ΔE 0.062
- Twilight #4E518B ΔE 0.063
Use #375CAE 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.