#1975A4
Closest named color: Ocean Blue (#03719C). oklch(53.4% 0.109 237.4), rgb(25, 117, 164).
Aa
White text reads best on this color (5.09:1).
About this color
#1975A4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.109 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.018 away. White text reads best on it, at 5.09:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 4.12:1 |
| White text | 5.09:1 |
Values
| HEX | #1975A4 |
| RGB | rgb(25, 117, 164) |
| HSL | hsl(200, 74%, 37%) |
| OKLCH | oklch(53.4% 0.109 237.4) |
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 #1975A4 | 5.09:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #1975A4 | 4.12:1 | AA large text | Lc 29.3 | Dividers and decoration only |
| #1975A4 text on white | 5.09:1 | AA | Lc 74.7 | Content text, not long reading |
| #1975A4 text on black | 4.12:1 | AA large text | Lc -27.0 | 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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A4C6DD
oklch(80.9% 0.049 237.8)
-
Step 400
400
#70A8CC
oklch(70.6% 0.079 237.6)
-
Step 500
500
#4792BF
oklch(63.1% 0.101 237.6)
-
Step 600
600 (this color)
#1975A4
oklch(53.4% 0.109 237.4)
-
Step 700
700
#136893
oklch(49.1% 0.101 237.5)
-
Step 800
800
#155577
oklch(42.7% 0.084 237.3)
-
Step 900
900
#1A4660
oklch(37.6% 0.065 238)
-
Step 950
950
#112938
oklch(26.9% 0.041 238.3)
#1975A4 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) | #5E75A6 | 0.060 |
| Deuteranopia (no green cones) | #4C69A3 | 0.048 |
| Tritanopia (no blue cones) | #008185 | 0.070 |
| Achromatopsia (no color) | #6E6E6E | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1975A4
#1975A4
oklch(53.4% 0.109 237.4)
- #9B5B23
#9B5B23
oklch(53.4% 0.109 57.9)
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 #1975A4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.018
- Nice Blue #107AB0 ΔE 0.021
- Muted Blue #3B719F ΔE 0.023
- Flat Blue #3C73A8 ΔE 0.024
- Sea Blue #047495 ΔE 0.026
- Dull Blue #49759C ΔE 0.036
- Ocean #017B92 ΔE 0.039
- Cerulean #457B9D ΔE 0.040
Use #1975A4 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.